From 98b5098253ac822404fd2a386285e46a60df65e4 Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Tue, 15 Aug 2023 16:48:28 +0200
Subject: [PATCH 01/15] Add bootstrap script to template

---
 .github/workflows/main.yml                    | 106 ++++++++++++------
 README.md                                     |  20 +++-
 copier.yml                                    |  18 ++-
 template/README.md.jinja                      |   8 +-
 template/bootstrap.py.jinja                   |  91 +++++++++++++++
 template/scripts/pre-commit                   |   5 +
 ...'conda' %}environment.yml{% endif %}.jinja |  11 ++
 7 files changed, 209 insertions(+), 50 deletions(-)
 create mode 100755 template/bootstrap.py.jinja
 create mode 100755 template/scripts/pre-commit
 create mode 100644 template/{% if venv == 'conda' %}environment.yml{% endif %}.jinja

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7154636..8b70c93 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -45,13 +45,11 @@ jobs:
         run: |
           set -eux
           mkdir ${NAME}
-          python -m copier copy -l -d author_name="My Name" -d labextension_name="${NAME}" -d python_name="${PYNAME}" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . ${NAME}
+          python -m copier copy -l -d author_name="My Name" -d labextension_name="${NAME}" -d python_name="${PYNAME}" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . ${NAME}
           pushd ${NAME}
           python -m pip install "jupyterlab>=4.0.0,<5"
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false jlpm
-          jlpm lint:check
-          python -m pip install -e .
-          jupyter labextension develop . --overwrite
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
+          ./scripts/pre-commit
           jupyter labextension list
           jupyter labextension list 2>&1 | grep -ie "${NAME}.*OK"
           python -m jupyterlab.browser_check
@@ -89,13 +87,12 @@ jobs:
         run: |
           set -eux
           mkdir myextension
-          python -m copier copy -l -d author_name="My Name" -d test=n -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
+          python -m copier copy -l -d author_name="My Name" -d test=n -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
           pushd myextension
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           pip install "jupyterlab>=4.0.0,<5"
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false jlpm
-          jlpm lint:check
-          pip install -e .
-          jupyter labextension develop . --overwrite
+          ./scripts/pre-commit
+
           jupyter labextension list
           jupyter labextension list 2>&1 | grep -ie "myextension.*OK"
           python -m jupyterlab.browser_check
@@ -133,15 +130,14 @@ jobs:
         run: |
           set -eux
           mkdir myextension
-          python -m copier copy -l -d author_name="My Name" -d has_settings=y -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
+          python -m copier copy -l -d author_name="My Name" -d has_settings=y -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
           pushd myextension
           pip install "jupyterlab>=4.0.0,<5"
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false jlpm
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           # It is not easily possible to get this version compatible with linter rules
           jlpm lint
-          jlpm lint:check
-          pip install -e .
-          jupyter labextension develop . --overwrite
+          ./scripts/pre-commit
+
           jupyter labextension list
           jupyter labextension list 2>&1 | grep -ie "myextension.*OK"
           python -m jupyterlab.browser_check
@@ -182,13 +178,11 @@ jobs:
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
           mkdir myextension
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
+          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
           cd myextension
           cat pyproject.toml
           pip install .
           pip install "jupyterlab>=4.0.0,<5"
-          jlpm
-          jlpm lint:check
 
       - name: Check pip install method
         run: |
@@ -210,12 +204,10 @@ jobs:
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
           mkdir myextension
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
+          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
           cd myextension
-          python -m pip install -e .[test]
+          python bootstrap.py
           python -m pip install "jupyterlab>=4.0.0,<5"
-          jupyter labextension develop . --overwrite
-          jupyter server extension enable myextension
 
           # Check unit tests are passing
           python -m pytest -vv -r ap --cov myextension
@@ -232,9 +224,14 @@ jobs:
           python -m jupyterlab.browser_check
         shell: bash
 
+      - name: Check rerunning bootstrap.py
+        run: |
+          set -eux
+          python bootstrap.py
+        shell: bash
+
       - name: Build server extension in develop mode
         run: |
-          jupyter labextension develop ./myextension --overwrite
           jupyter labextension build ./myextension
 
           jupyter labextension uninstall myextension
@@ -250,7 +247,7 @@ jobs:
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
           mkdir myextension
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
+          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
           cd myextension
           python -m pip install "jupyterlab>=4.0.0,<5"
           jupyter lab clean --all
@@ -351,13 +348,12 @@ jobs:
         run: |
           set -eux
           mkdir mytheme
-          python -m copier copy -l -d kind=theme -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . mytheme
+          python -m copier copy -l -d kind=theme -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . mytheme
           pushd mytheme
           python -m pip install "jupyterlab>=4.0.0,<5"
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false jlpm
-          jlpm lint:check
-          python -m pip install -e .
-          jupyter labextension develop . --overwrite
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
+          ./scripts/pre-commit
+
           jupyter labextension list
           jupyter labextension list 2>&1 | grep -ie "mytheme.*OK"
           python -m jupyterlab.browser_check
@@ -395,13 +391,13 @@ jobs:
         run: |
           set -eux
           mkdir myextension
-          python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
+          python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
           pushd myextension
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           python -m pip install "jupyterlab>=4.0.0,<5"
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false jlpm
-          jlpm lint:check
-          python -m pip install -e .
-          jupyter labextension develop . --overwrite
+
+          ./scripts/pre-commit
+
           jupyter labextension list
           jupyter labextension list 2>&1 | grep -ie "myextension.*OK"
           python -m jupyterlab.browser_check
@@ -412,6 +408,48 @@ jobs:
           popd
           rm -rf myextension
 
+  conda_boostrap:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - uses: conda-incubator/setup-miniconda@v2
+        with:
+          auto-activate-base: true
+          activate-environment: ""
+
+      - name: Install dependencies
+        run: |
+          python -m pip install "copier>=8.0.0" jinja2-time "pydantic<2.0.0"
+
+      - name: Setup Git
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+
+      - name: Create server extension with conda
+        run: |
+          mkdir myextension
+          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
+
+      - name: Check conda environment
+        run: |
+          set -eux
+          conda env list | grep -ie "myextension_dev"
+          conda activate myextension_dev
+          jupyter server extension list
+          jupyter server extension list 2>&1 | grep -ie "myextension.*OK"
+          jupyter labextension list
+          jupyter labextension list 2>&1 | grep -ie "myextension.*OK"
+
+          # This test should be made outside the extension folder
+          python -m jupyterlab.browser_check
+
+          pip uninstall -y myextension jupyterlab
+          rm -rf myextension
+        shell: bash
+
   pnpm_linker:
     runs-on: ubuntu-latest
     strategy:
diff --git a/README.md b/README.md
index 7ab49cf..4fdc736 100644
--- a/README.md
+++ b/README.md
@@ -34,16 +34,13 @@ cd myextension
 
 3. Use copier to generate an extension, following the prompts to fill all required information.
 
-```
+```sh
 copier copy https://github.com/jupyterlab/extension-template .
 ```
 
 > If you use copier v8+, you will need to pass the flag `--UNSAFE` (see [documentation](https://copier.readthedocs.io/en/stable/configuring/#unsafe)).
 
-> If you are using Visual Studio Code, you may be interested in the 
-> [configuration template](https://github.com/jupyterlab/vscode-config-template) for JupyterLab extension.
-
----
+<details><summary><em>How to use a template specific version</em></summary>
 
 If you'd like to generate an extension for a older release, use the `--vcs-ref` option and give a tag or commit from this repository.
 
@@ -53,6 +50,17 @@ copier --vcs-ref v4.0.0 copy https://github.com/jupyterlab/extension-template .
 
 > If you use copier v8+, you will need to pass the flag `--UNSAFE` (see [documentation](https://copier.readthedocs.io/en/stable/configuring/#unsafe)).
 
+---
+
+</details>
+
+4. What's next
+
+At this point, you repository has been [initialize with git](https://www.atlassian.com/git/tutorials/setting-up-a-repository) as code versioning tool and a development environment has been set up if you picked `conda` or `venv`. You should be all set. Open your preferred code editor and start coding.
+
+> If you are using Visual Studio Code, you may be interested in the 
+> [configuration template](https://github.com/jupyterlab/vscode-config-template) for JupyterLab extension.
+
 > If you are looking for a template compatible with JupyterLab version prior to 4.0.0, look at 
 > the [cookiecutter template](https://github.com/jupyterlab/extension-cookiecutter-ts) or the
 > [mimerenderer template](https://github.com/jupyterlab/mimerender-cookiecutter-ts).
@@ -61,7 +69,7 @@ copier --vcs-ref v4.0.0 copy https://github.com/jupyterlab/extension-template .
 
 > This only works with an older version of the _copier_ template. It does not work
 > with an extension generated using the cookiecutter template. In that case, you
-> could try the script `python -m jupyterlab.upgrade_extension`.
+> could try to execute the script `python -m jupyterlab.upgrade_extension .` first.
 
 Extension generated from the copier template can be [updated](https://copier.readthedocs.io/en/stable/updating/)
 with a newer version of the template by executing the command:
diff --git a/copier.yml b/copier.yml
index 6cb54ca..4fc96d8 100644
--- a/copier.yml
+++ b/copier.yml
@@ -2,16 +2,18 @@ _min_copier_version: "7.1.0"
 _subdirectory: template
 _jinja_extensions:
     - jinja2_time.TimeExtension
+_tasks:
+  - ["{{ _copier_python }}", bootstrap.py]
 
 kind:
   type: str
   help: What is your extension kind?
   default: frontend
   choices:
-    - frontend
-    - mimerenderer
-    - server
-    - theme
+    Pure frontend: frontend
+    Mimetype renderer: mimerenderer
+    Frontend and backend: server
+    Theme: theme
 
 author_name:
   type: str
@@ -64,6 +66,14 @@ repository:
   help: Git remote repository URL
   placeholder: https://github.com/github_username/my-extension
 
+venv:
+  type: str
+  help: What tool are you using to handle virtual environments?
+  default: conda
+  choices:
+    Conda environment (https://docs.conda.io/projects/conda/en/latest/index.html): "conda"
+    None (nothing set up): "none"
+
 viewer_name:
   when: "{{ kind == 'mimerenderer' }}"
   type: str
diff --git a/template/README.md.jinja b/template/README.md.jinja
index a199eed..4da5e40 100644
--- a/template/README.md.jinja
+++ b/template/README.md.jinja
@@ -60,12 +60,8 @@ The `jlpm` command is JupyterLab's pinned version of
 ```bash
 # Clone the repo to your local environment
 # Change directory to the {{ python_name }} directory
-# Install package in development mode
-pip install -e ".{% if test and kind.lower() == 'server' %}[test]{% endif %}"
-# Link your development version of the extension with JupyterLab
-jupyter labextension develop . --overwrite{% if kind.lower() == 'server' %}
-# Server extension must be manually installed in develop mode
-jupyter server extension enable {{ python_name }}{% endif %}
+python bootstrap.py
+
 # Rebuild extension Typescript source after making changes
 jlpm build
 ```
diff --git a/template/bootstrap.py.jinja b/template/bootstrap.py.jinja
new file mode 100755
index 0000000..7d9bebf
--- /dev/null
+++ b/template/bootstrap.py.jinja
@@ -0,0 +1,91 @@
+#!/usr/bin/env python
+# This script initialize your repository and development environment.
+# You can re-execute it at any time
+
+import json
+import os
+from pathlib import Path
+from shutil import copy, which
+from subprocess import CalledProcessError, PIPE, check_call, check_output, run
+
+
+NOT_GIT_REPO = "fatal: not a git repository (or any of the parent directories): .git"
+ENVIRONMENT_NAME = os.environ.get("CONDA_ENVIRONMENT_NAME", "{{ python_name }}_dev")
+ENVIRONMENT_FILE = os.environ.get("CONDA_ENVIRONMENT_FILE", "environment.yml")
+
+
+def initialize_git_repository():
+    """Initialize git repository"""
+    git_status = run(["git", "status"], stdout=PIPE, stderr=PIPE, encoding="utf-8")
+    if git_status.returncode > 0 and git_status.stderr.strip() == NOT_GIT_REPO:
+        print("\nInitializing git...")
+        try:
+            check_call(["git", "init"])
+            check_call(["git", "branch", "-m", "main"])
+        except CalledProcessError as e:
+            print(f"Failed to initialize git repository:\n{e!s}\n")
+        else:
+            print("Git initialized for the extension\n")
+
+    # Copy pre-commit hook
+    copy("scripts/pre-commit", ".git/hooks")
+
+{% if venv == "conda" %}
+def create_conda_environment():
+    mamba = which("mamba")
+    conda_exe = "mamba" if mamba is not None else "conda"
+
+    print("\nCreating conda environment...")
+    try:        
+        output = check_output([conda_exe, "env", "list", "--json"], encoding="utf-8")
+        envs = json.loads(output)["envs"]
+        # if environment exists
+        command = "update" if conda_exe == "mamba" or any(map(lambda e: Path(e).name == ENVIRONMENT_NAME, envs)) else "create"
+        check_call([conda_exe, "env", command, "--name", ENVIRONMENT_NAME, "--file", ENVIRONMENT_FILE])
+    except CalledProcessError as e:
+        print(f"Fail to create development environment using '{conda_exe}':\n{e!s}\n")
+    else:
+        print(f"Conda environment '{ENVIRONMENT_NAME}' {command}d. Execute '{conda_exe} activate {ENVIRONMENT_NAME}' to use it.\n")
+
+{% endif %}
+def install_extension():{% if venv == "conda" %}
+    mamba = which("mamba")
+    conda_exe = "mamba" if mamba is not None else "conda"
+    pre_command = [conda_exe, "run", "--name", ENVIRONMENT_NAME]
+{% else %}
+    pre_command = []
+    # Checking nodeJS is available
+    try:
+        output = check_output(["node", "--version"], encoding="utf-8")
+    except CalledProcessError as e:
+        print("You must install nodeJS LTS to develop Jupyter extension; see https://nodejs.org")
+        return
+
+    if "CI" not in os.environ:
+        # Don't prompt on CI
+        answer = input("Do you want to install the extension in development mode?\ny/N: ")
+        if not answer.lower().startswith('y'):
+            return
+{% endif %}
+    print("\nInstalling the extension in development mode...")
+
+    # Force uninstalling the extension to avoid trouble when installing in dev mode
+    run(pre_command + ["pip", "uninstall", "--yes", "{{ python_name }}"], stdout=PIPE, stderr=PIPE)
+
+    try:
+        # Install package in development mode
+        check_output(pre_command + ["pip", "install", "-e", ".{% if test and kind.lower() == 'server' %}[test]{% endif %}"])
+        # Link your development version of the extension with JupyterLab
+        check_output(pre_command + ["jupyter", "labextension", "develop", ".", "--overwrite"]){% if kind.lower() == 'server' %}
+        # Server extension must be manually installed in develop mode
+        check_output(pre_command + ["jupyter", "server", "extension", "enable", "{{ python_name }}"]){% endif %}
+    except CalledProcessError as e:
+        print(f"Fail to install the extension in development mode:\n{e!s}\n")
+    else:
+        print("Extension installed in development mode.\n")
+
+
+if __name__ == "__main__":
+    initialize_git_repository(){% if venv == "conda" %}
+    create_conda_environment(){% endif %}
+    install_extension()
diff --git a/template/scripts/pre-commit b/template/scripts/pre-commit
new file mode 100755
index 0000000..59da0fe
--- /dev/null
+++ b/template/scripts/pre-commit
@@ -0,0 +1,5 @@
+#!/bin/sh
+# This script should be installed as pre-commit git hook (see https://www.atlassian.com/git/tutorials/git-hooks)
+
+# Check frontend files are linted
+jlpm lint:check
diff --git a/template/{% if venv == 'conda' %}environment.yml{% endif %}.jinja b/template/{% if venv == 'conda' %}environment.yml{% endif %}.jinja
new file mode 100644
index 0000000..561894b
--- /dev/null
+++ b/template/{% if venv == 'conda' %}environment.yml{% endif %}.jinja	
@@ -0,0 +1,11 @@
+# Extension development environment
+channels:
+  - conda-forge
+
+dependencies:
+  # runtime dependencies
+  - python
+  - jupyterlab >=4.0.0,<5
+  # labextension build dependencies
+  - nodejs >=18,<19
+  - pip

From 58875092bfb76b3c996649552cfd8d7b811d282d Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Tue, 15 Aug 2023 17:18:50 +0200
Subject: [PATCH 02/15] Create extension in temporary folder

---
 .github/workflows/main.yml | 74 +++++++++++++++++++++-----------------
 1 file changed, 41 insertions(+), 33 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8b70c93..079c736 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -86,9 +86,10 @@ jobs:
       - name: Create pure frontend extension
         run: |
           set -eux
-          mkdir myextension
+          tmpfolder=$(mktemp -d)
+          mkdir $tmpfolder
           python -m copier copy -l -d author_name="My Name" -d test=n -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
-          pushd myextension
+          pushd $tmpfolder
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           pip install "jupyterlab>=4.0.0,<5"
           ./scripts/pre-commit
@@ -101,7 +102,7 @@ jobs:
           pip uninstall -y myextension jupyterlab
 
           popd
-          rm -rf myextension
+          rm -rf $tmpfolder
 
   settings:
     runs-on: ubuntu-latest
@@ -129,9 +130,10 @@ jobs:
       - name: Create pure frontend extension
         run: |
           set -eux
-          mkdir myextension
-          python -m copier copy -l -d author_name="My Name" -d has_settings=y -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
-          pushd myextension
+          tmpfolder=$(mktemp -d)
+          mkdir $tmpfolder
+          python -m copier copy -l -d author_name="My Name" -d has_settings=y -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          pushd $tmpfolder
           pip install "jupyterlab>=4.0.0,<5"
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           # It is not easily possible to get this version compatible with linter rules
@@ -146,7 +148,7 @@ jobs:
           pip uninstall -y myextension jupyterlab
 
           popd
-          rm -rf myextension
+          rm -rf $tmpfolder
 
   server:
     runs-on: ${{ matrix.os }}
@@ -177,9 +179,10 @@ jobs:
         env:
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
-          mkdir myextension
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
-          cd myextension
+          tmpfolder=$(mktemp -d)
+          mkdir $tmpfolder
+          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          cd $tmpfolder
           cat pyproject.toml
           pip install .
           pip install "jupyterlab>=4.0.0,<5"
@@ -196,16 +199,17 @@ jobs:
           python -m jupyterlab.browser_check
 
           pip uninstall -y myextension jupyterlab
-          rm -rf myextension
+          rm -rf $tmpfolder
         shell: bash
 
       - name: Create server extension pip develop
         env:
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
-          mkdir myextension
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
-          cd myextension
+          tmpfolder=$(mktemp -d)
+          mkdir $tmpfolder
+          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          cd $tmpfolder
           python bootstrap.py
           python -m pip install "jupyterlab>=4.0.0,<5"
 
@@ -232,23 +236,24 @@ jobs:
 
       - name: Build server extension in develop mode
         run: |
-          jupyter labextension build ./myextension
+          jupyter labextension build $tmpfolder
 
           jupyter labextension uninstall myextension
           python -m pip uninstall -y myextension jupyterlab
 
       - run: |
           set -eux
-          rm -rf myextension
+          rm -rf $tmpfolder
         shell: bash
 
       - name: Install server extension from a tarball
         env:
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
-          mkdir myextension
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
-          cd myextension
+          tmpfolder=$(mktemp -d)
+          mkdir $tmpfolder
+          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          cd $tmpfolder
           python -m pip install "jupyterlab>=4.0.0,<5"
           jupyter lab clean --all
           python -m build
@@ -267,10 +272,10 @@ jobs:
 
           python -m jupyterlab.browser_check
 
-          cp myextension/dist/*.tar.gz myextension.tar.gz
-          cp myextension/dist/*.whl myextension.whl
+          cp $tmpfolder/dist/*.tar.gz myextension.tar.gz
+          cp $tmpfolder/dist/*.whl myextension.whl
           python -m pip uninstall -y myextension jupyterlab
-          rm -rf myextension
+          rm -rf $tmpfolder
         shell: bash
 
       - uses: actions/upload-artifact@v2
@@ -390,9 +395,10 @@ jobs:
       - name: Create pure frontend extension
         run: |
           set -eux
-          mkdir myextension
-          python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
-          pushd myextension
+          tmpfolder=$(mktemp -d)
+          mkdir $tmpfolder
+          python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          pushd $tmpfolder
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           python -m pip install "jupyterlab>=4.0.0,<5"
 
@@ -406,7 +412,7 @@ jobs:
           python -m pip uninstall -y myextension jupyterlab
 
           popd
-          rm -rf myextension
+          rm -rf $tmpfolder
 
   conda_boostrap:
     runs-on: ubuntu-latest
@@ -430,8 +436,9 @@ jobs:
 
       - name: Create server extension with conda
         run: |
-          mkdir myextension
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
+          tmpfolder=$(mktemp -d)
+          mkdir $tmpfolder
+          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . $tmpfolder
 
       - name: Check conda environment
         run: |
@@ -447,7 +454,7 @@ jobs:
           python -m jupyterlab.browser_check
 
           pip uninstall -y myextension jupyterlab
-          rm -rf myextension
+          rm -rf $tmpfolder
         shell: bash
 
   pnpm_linker:
@@ -477,13 +484,14 @@ jobs:
           KIND: ${{ matrix.kind }}
         run: |
           set -eux
-          mkdir myextension
-          python -m copier copy -l -d kind=${KIND} -d author_name="My Name" -d labextension_name=myextension -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
-          pushd myextension
+          tmpfolder=$(mktemp -d)
+          mkdir $tmpfolder
+          python -m copier copy -l -d kind=${KIND} -d author_name="My Name" -d labextension_name=myextension -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          pushd $tmpfolder
           sed -i 's/^\(nodeLinker:\s\).*$/\1pnpm/' .yarnrc.yml
           python -m pip install "jupyterlab>=4.0.0,<5"
           YARN_ENABLE_IMMUTABLE_INSTALLS=false jlpm
           if [ ! -d node_modules/.store ] ; then echo 'nodes_module directory should contain a .store directory when using pnpm nodeLinker'; exit 1; fi;
           jlpm build
           popd
-          rm -rf myextension
+          rm -rf $tmpfolder

From 5882cb7d8af76627afdd65de25bd5fa454a7a1a3 Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Tue, 15 Aug 2023 17:22:44 +0200
Subject: [PATCH 03/15] Don't remake the temp folder

---
 .github/workflows/main.yml | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 079c736..bfe5bcd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -44,9 +44,10 @@ jobs:
           PYNAME: ${{ matrix.pyname }}
         run: |
           set -eux
-          mkdir ${NAME}
-          python -m copier copy -l -d author_name="My Name" -d labextension_name="${NAME}" -d python_name="${PYNAME}" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . ${NAME}
-          pushd ${NAME}
+          tmpfolder=$(mktemp -d)
+          
+          python -m copier copy -l -d author_name="My Name" -d labextension_name="${NAME}" -d python_name="${PYNAME}" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          pushd $tmpfolder
           python -m pip install "jupyterlab>=4.0.0,<5"
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           ./scripts/pre-commit
@@ -58,7 +59,7 @@ jobs:
           python -m pip uninstall -y ${NAME} jupyterlab
 
           popd
-          rm -rf ${NAME}
+          rm -rf $tmpfolder
 
   no-tests:
     runs-on: ubuntu-latest
@@ -87,7 +88,7 @@ jobs:
         run: |
           set -eux
           tmpfolder=$(mktemp -d)
-          mkdir $tmpfolder
+          
           python -m copier copy -l -d author_name="My Name" -d test=n -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
           pushd $tmpfolder
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
@@ -131,7 +132,7 @@ jobs:
         run: |
           set -eux
           tmpfolder=$(mktemp -d)
-          mkdir $tmpfolder
+          
           python -m copier copy -l -d author_name="My Name" -d has_settings=y -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
           pip install "jupyterlab>=4.0.0,<5"
@@ -180,7 +181,7 @@ jobs:
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
           tmpfolder=$(mktemp -d)
-          mkdir $tmpfolder
+          
           python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           cd $tmpfolder
           cat pyproject.toml
@@ -207,7 +208,7 @@ jobs:
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
           tmpfolder=$(mktemp -d)
-          mkdir $tmpfolder
+          
           python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           cd $tmpfolder
           python bootstrap.py
@@ -251,7 +252,7 @@ jobs:
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
           tmpfolder=$(mktemp -d)
-          mkdir $tmpfolder
+          
           python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           cd $tmpfolder
           python -m pip install "jupyterlab>=4.0.0,<5"
@@ -396,7 +397,7 @@ jobs:
         run: |
           set -eux
           tmpfolder=$(mktemp -d)
-          mkdir $tmpfolder
+          
           python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
@@ -437,7 +438,7 @@ jobs:
       - name: Create server extension with conda
         run: |
           tmpfolder=$(mktemp -d)
-          mkdir $tmpfolder
+          
           python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . $tmpfolder
 
       - name: Check conda environment
@@ -485,7 +486,7 @@ jobs:
         run: |
           set -eux
           tmpfolder=$(mktemp -d)
-          mkdir $tmpfolder
+          
           python -m copier copy -l -d kind=${KIND} -d author_name="My Name" -d labextension_name=myextension -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
           sed -i 's/^\(nodeLinker:\s\).*$/\1pnpm/' .yarnrc.yml

From ab99ea7eca8eb9962e05c3852a97afb0635b6434 Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Tue, 15 Aug 2023 17:43:11 +0200
Subject: [PATCH 04/15] Add jupyterlab as dev extra

---
 .github/workflows/main.yml    | 6 ------
 template/bootstrap.py.jinja   | 2 +-
 template/pyproject.toml.jinja | 9 ++++++---
 3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index bfe5bcd..bf9e186 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -48,7 +48,6 @@ jobs:
           
           python -m copier copy -l -d author_name="My Name" -d labextension_name="${NAME}" -d python_name="${PYNAME}" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
-          python -m pip install "jupyterlab>=4.0.0,<5"
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           ./scripts/pre-commit
           jupyter labextension list
@@ -92,7 +91,6 @@ jobs:
           python -m copier copy -l -d author_name="My Name" -d test=n -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
           pushd $tmpfolder
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
-          pip install "jupyterlab>=4.0.0,<5"
           ./scripts/pre-commit
 
           jupyter labextension list
@@ -135,7 +133,6 @@ jobs:
           
           python -m copier copy -l -d author_name="My Name" -d has_settings=y -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
-          pip install "jupyterlab>=4.0.0,<5"
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           # It is not easily possible to get this version compatible with linter rules
           jlpm lint
@@ -212,7 +209,6 @@ jobs:
           python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           cd $tmpfolder
           python bootstrap.py
-          python -m pip install "jupyterlab>=4.0.0,<5"
 
           # Check unit tests are passing
           python -m pytest -vv -r ap --cov myextension
@@ -356,7 +352,6 @@ jobs:
           mkdir mytheme
           python -m copier copy -l -d kind=theme -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . mytheme
           pushd mytheme
-          python -m pip install "jupyterlab>=4.0.0,<5"
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           ./scripts/pre-commit
 
@@ -401,7 +396,6 @@ jobs:
           python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
-          python -m pip install "jupyterlab>=4.0.0,<5"
 
           ./scripts/pre-commit
 
diff --git a/template/bootstrap.py.jinja b/template/bootstrap.py.jinja
index 7d9bebf..3384035 100755
--- a/template/bootstrap.py.jinja
+++ b/template/bootstrap.py.jinja
@@ -74,7 +74,7 @@ def install_extension():{% if venv == "conda" %}
 
     try:
         # Install package in development mode
-        check_output(pre_command + ["pip", "install", "-e", ".{% if test and kind.lower() == 'server' %}[test]{% endif %}"])
+        check_output(pre_command + ["pip", "install", "-e", ".[dev{% if test and kind.lower() == 'server' %}, test{% endif %}]"])
         # Link your development version of the extension with JupyterLab
         check_output(pre_command + ["jupyter", "labextension", "develop", ".", "--overwrite"]){% if kind.lower() == 'server' %}
         # Server extension must be manually installed in develop mode
diff --git a/template/pyproject.toml.jinja b/template/pyproject.toml.jinja
index 1891b05..faa4ff4 100644
--- a/template/pyproject.toml.jinja
+++ b/template/pyproject.toml.jinja
@@ -25,16 +25,19 @@ dependencies = [{% if kind.lower() == "server" %}
     "jupyter_server>=2.0.1,<3"{% endif %}
 ]
 dynamic = ["version", "description", "authors", "urls", "keywords"]
-{% if test and kind.lower() == 'server' %}
+
 [project.optional-dependencies]
+dev = [
+    "jupyterlab>=4.0.0,<5"
+]{% if test and kind.lower() == 'server' %}
 test = [
     "coverage",
     "pytest",
     "pytest-asyncio",
     "pytest-cov",
     "pytest-jupyter[server]>=0.6.0"
-]
-{% endif %}
+]{% endif %}
+
 [tool.hatch.version]
 source = "nodejs"
 

From 77de15f04df046b555fc5ae107bdd5dd148d548a Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Tue, 15 Aug 2023 17:55:20 +0200
Subject: [PATCH 05/15] More CI fixes

---
 .github/workflows/check-tests.yml | 44 +++++++++++++++++--------------
 .github/workflows/main.yml        |  2 +-
 2 files changed, 25 insertions(+), 21 deletions(-)

diff --git a/.github/workflows/check-tests.yml b/.github/workflows/check-tests.yml
index 7da16ca..5fc0671 100644
--- a/.github/workflows/check-tests.yml
+++ b/.github/workflows/check-tests.yml
@@ -23,21 +23,23 @@ jobs:
         run: python -m pip install -U "copier>=8.0.0" jinja2-time "jupyterlab>=4.0.0,<5" "pydantic<2.0.0"
 
       - name: Create the extension
+        id: create-extension
         run: |
           set -eux
-          mkdir myextension
-          python -m copier copy -l -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
-          cat myextension/pyproject.toml
+          tmpfolder=$(mktemp -d)
+          echo "extension_folder=${tmpfolder}" >> "$GITHUB_OUTPUT"
+          python -m copier copy -l -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          cat $tmpfolder/pyproject.toml
 
       - name: Test the extension
-        working-directory: myextension
+        working-directory: ${{ steps.create-extension.outputs.extension_folder }}
         run: |
           set -eux
           YARN_ENABLE_IMMUTABLE_INSTALLS=false jlpm
           jlpm test
 
       - name: Install the extension
-        working-directory: myextension
+        working-directory: ${{ steps.create-extension.outputs.extension_folder }}
         run: |
           set -eux
           python -m pip install -v .
@@ -48,7 +50,7 @@ jobs:
           jupyter labextension list
 
       - name: Install UI tests dependencies
-        working-directory: myextension/ui-tests
+        working-directory: ${{ steps.create-extension.outputs.extension_folder }}/ui-tests
         env:
           PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
           YARN_ENABLE_IMMUTABLE_INSTALLS: false
@@ -59,14 +61,14 @@ jobs:
         with:
           path: |
             ${{ github.workspace }}/pw-browsers
-          key: ${{ runner.os }}-${{ hashFiles('myextension/ui-tests/yarn.lock') }}
+          key: ${{ runner.os }}-${{ hashFiles('${{ steps.create-extension.outputs.extension_folder }}/ui-tests/yarn.lock') }}
 
       - name: Install browser
         run: jlpm playwright install chromium
-        working-directory: myextension/ui-tests
+        working-directory: ${{ steps.create-extension.outputs.extension_folder }}/ui-tests
 
       - name: Execute integration tests
-        working-directory: myextension/ui-tests
+        working-directory: ${{ steps.create-extension.outputs.extension_folder }}/ui-tests
         run: |
           jlpm playwright test
 
@@ -76,8 +78,8 @@ jobs:
         with:
           name: extension-playwright-tests
           path: |
-            myextension/ui-tests/test-results
-            myextension/ui-tests/playwright-report
+            ${{ steps.create-extension.outputs.extension_folder }}/ui-tests/test-results
+            ${{ steps.create-extension.outputs.extension_folder }}/ui-tests/playwright-report
 
   test-mimerenderer:
     runs-on: ubuntu-latest
@@ -92,13 +94,15 @@ jobs:
         run: python -m pip install -U "copier>=8.0.0" jinja2-time "jupyterlab>=4.0.0,<5" "pydantic<2.0.0"
 
       - name: Create the extension
+        id: create-extension
         run: |
           set -eux
-          mkdir myextension
-          python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . myextension
+          tmpfolder=$(mktemp -d)
+          python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
+          echo "extension_folder=${tmpfolder}" >> "$GITHUB_OUTPUT"
 
       - name: Install the extension
-        working-directory: myextension
+        working-directory: ${{ steps.create-extension.outputs.extension_folder }}
         run: |
           set -eux
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m pip install -v .
@@ -108,7 +112,7 @@ jobs:
           jupyter labextension list
 
       - name: Install UI tests dependencies
-        working-directory: myextension/ui-tests
+        working-directory: ${{ steps.create-extension.outputs.extension_folder }}/ui-tests
         env:
           PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
           YARN_ENABLE_IMMUTABLE_INSTALLS: false 
@@ -119,14 +123,14 @@ jobs:
         with:
           path: |
             ${{ github.workspace }}/pw-browsers
-          key: ${{ runner.os }}-${{ hashFiles('myextension/ui-tests/yarn.lock') }}
+          key: ${{ runner.os }}-${{ hashFiles('${{ steps.create-extension.outputs.extension_folder }}/ui-tests/yarn.lock') }}
 
       - name: Install browser
         run: jlpm playwright install chromium
-        working-directory: myextension/ui-tests
+        working-directory: ${{ steps.create-extension.outputs.extension_folder }}/ui-tests
 
       - name: Execute integration tests
-        working-directory: myextension/ui-tests
+        working-directory: ${{ steps.create-extension.outputs.extension_folder }}/ui-tests
         run: |
           # Generate reference snapshot first
           jlpm playwright test -u
@@ -138,5 +142,5 @@ jobs:
         with:
           name: mimerenderer-playwright-tests
           path: |
-            myextension/ui-tests/test-results
-            myextension/ui-tests/playwright-report
\ No newline at end of file
+            ${{ steps.create-extension.outputs.extension_folder }}/ui-tests/test-results
+            ${{ steps.create-extension.outputs.extension_folder }}/ui-tests/playwright-report
\ No newline at end of file
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index bf9e186..5f912ce 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -253,7 +253,7 @@ jobs:
           cd $tmpfolder
           python -m pip install "jupyterlab>=4.0.0,<5"
           jupyter lab clean --all
-          python -m build
+          python -m build $tmpfolder
           cd dist
           python -m pip install myextension-0.1.0.tar.gz
 

From 64cc22539149517c851b59ed96a42cf89bc39576 Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sun, 20 Aug 2023 12:33:39 +0200
Subject: [PATCH 06/15] Improve bootstrap script

---
 template/bootstrap.py.jinja | 26 ++++++++++++++++++++------
 template/scripts/pre-commit |  4 +++-
 2 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/template/bootstrap.py.jinja b/template/bootstrap.py.jinja
index 3384035..4551f0f 100755
--- a/template/bootstrap.py.jinja
+++ b/template/bootstrap.py.jinja
@@ -5,17 +5,23 @@
 import json
 import os
 from pathlib import Path
-from shutil import copy, which
+from shutil import which
 from subprocess import CalledProcessError, PIPE, check_call, check_output, run
 
 
+# Git error looked for to determined if the extension folder is already using Git
 NOT_GIT_REPO = "fatal: not a git repository (or any of the parent directories): .git"
+# Conda development environment name; defined by the environment variable CONDA_ENVIRONMENT_NAME and default to the 'python package name_dev'
 ENVIRONMENT_NAME = os.environ.get("CONDA_ENVIRONMENT_NAME", "{{ python_name }}_dev")
+# Conda development environment specification; defined the environment variable CONDA_ENVIRONMENT_FILE and default to 'environment.yml'
 ENVIRONMENT_FILE = os.environ.get("CONDA_ENVIRONMENT_FILE", "environment.yml")
 
 
 def initialize_git_repository():
-    """Initialize git repository"""
+    """Initialize git repository.
+    
+    The git repository is initialized with the default branch 'main'
+    """
     git_status = run(["git", "status"], stdout=PIPE, stderr=PIPE, encoding="utf-8")
     if git_status.returncode > 0 and git_status.stderr.strip() == NOT_GIT_REPO:
         print("\nInitializing git...")
@@ -25,13 +31,18 @@ def initialize_git_repository():
         except CalledProcessError as e:
             print(f"Failed to initialize git repository:\n{e!s}\n")
         else:
-            print("Git initialized for the extension\n")
-
-    # Copy pre-commit hook
-    copy("scripts/pre-commit", ".git/hooks")
+            print("Git initialized with default branch 'main' for the extension\n")
 
 {% if venv == "conda" %}
 def create_conda_environment():
+    """Create a development Conda environment.
+    
+    The default environment name is defined by the constant ENVIRONMENT_NAME
+    The environment specification are defined in ENVIRONMENT_FILE (see the
+    documentation for more information https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#creating-an-environment-from-an-environment-yml-file)
+
+    It will use 'mamba' instead of 'conda' if it is found.
+    """
     mamba = which("mamba")
     conda_exe = "mamba" if mamba is not None else "conda"
 
@@ -49,10 +60,13 @@ def create_conda_environment():
 
 {% endif %}
 def install_extension():{% if venv == "conda" %}
+    """Install the extension in development mode{% if venv == "conda" %} in the conda environment.
+    """
     mamba = which("mamba")
     conda_exe = "mamba" if mamba is not None else "conda"
     pre_command = [conda_exe, "run", "--name", ENVIRONMENT_NAME]
 {% else %}
+    """
     pre_command = []
     # Checking nodeJS is available
     try:
diff --git a/template/scripts/pre-commit b/template/scripts/pre-commit
index 59da0fe..262b582 100755
--- a/template/scripts/pre-commit
+++ b/template/scripts/pre-commit
@@ -1,5 +1,7 @@
 #!/bin/sh
-# This script should be installed as pre-commit git hook (see https://www.atlassian.com/git/tutorials/git-hooks)
+# This script can be installed as pre-commit git hook (see https://www.atlassian.com/git/tutorials/git-hooks)
+# by copying it in '.git/hooks' folder. It will allow to catch
+# linter error early.
 
 # Check frontend files are linted
 jlpm lint:check

From 594998d32055d71ed89e7c6ba85a6423a9cb864f Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sun, 20 Aug 2023 12:46:01 +0200
Subject: [PATCH 07/15] Improve the README

---
 README.md | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 4fdc736..db6777d 100644
--- a/README.md
+++ b/README.md
@@ -11,18 +11,38 @@ a JupyterLab extension. Four kinds of extension are supported:
 
 ## Use the template to create extension
 
+0. Pre-requisites
+
+We strongly advice you to use conda package manager.
+To do so, you can install [Miniconda](https://docs.conda.io/en/latest/miniconda.html).
+
+Once you have it installed, open a _Anaconda Prompt_ (on Windows) or any shell
+(on Linux and macOS) and execute the following commands:
+
+```sh
+conda config --add channels conda-forge
+conda install -yc conda-forge mamba
+```
+
+The first one will give you access to the community driven package repository
+[conda-forge](https://conda-forge.org/docs/user/introduction.html). And the
+second will install a faster package manager than conda, [mamba](https://mamba.readthedocs.io).
+It is fully compatible with _conda_ and uses the same command syntax.
+
 1. Install copier and some plugins.
 
-With `pip`:
+With `conda` / `mamba` (the two commands have the same API):
 
 ```sh
-pip install "copier~=7.2" jinja2-time "pydantic<2.0.0"
+mamba install -c conda-forge "copier>=7,<8" jinja2-time
 ```
 
-Or with `conda` / `mamba`:
+or
+
+With `pip`:
 
 ```sh
-conda install -c conda-forge "copier>=7,<8" jinja2-time
+pip install "copier~=7.2" jinja2-time "pydantic<2.0.0"
 ```
 
 2. Create an extension directory and go to it.

From 0bc5182eb9a95ebb17f593e72327fa028d3cd3ca Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sun, 20 Aug 2023 12:54:34 +0200
Subject: [PATCH 08/15] Try fixing the CI

---
 .github/workflows/main.yml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5f912ce..a1ce117 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -421,21 +421,25 @@ jobs:
           activate-environment: ""
 
       - name: Install dependencies
+        shell: bash -el {0}
         run: |
           python -m pip install "copier>=8.0.0" jinja2-time "pydantic<2.0.0"
 
       - name: Setup Git
+        shell: bash -el {0}
         run: |
           git config --global user.name "github-actions[bot]"
           git config --global user.email "github-actions[bot]@users.noreply.github.com"
 
       - name: Create server extension with conda
+        shell: bash -el {0}
         run: |
           tmpfolder=$(mktemp -d)
           
           python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . $tmpfolder
 
       - name: Check conda environment
+        shell: bash -el {0}
         run: |
           set -eux
           conda env list | grep -ie "myextension_dev"
@@ -450,7 +454,6 @@ jobs:
 
           pip uninstall -y myextension jupyterlab
           rm -rf $tmpfolder
-        shell: bash
 
   pnpm_linker:
     runs-on: ubuntu-latest

From 05aa8a61626b88bf102fd12c510ef7487f289bb5 Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sun, 20 Aug 2023 14:52:20 +0200
Subject: [PATCH 09/15] Fix jinja template

---
 template/bootstrap.py.jinja | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/template/bootstrap.py.jinja b/template/bootstrap.py.jinja
index 4551f0f..4552b39 100755
--- a/template/bootstrap.py.jinja
+++ b/template/bootstrap.py.jinja
@@ -59,7 +59,7 @@ def create_conda_environment():
         print(f"Conda environment '{ENVIRONMENT_NAME}' {command}d. Execute '{conda_exe} activate {ENVIRONMENT_NAME}' to use it.\n")
 
 {% endif %}
-def install_extension():{% if venv == "conda" %}
+def install_extension():
     """Install the extension in development mode{% if venv == "conda" %} in the conda environment.
     """
     mamba = which("mamba")

From c7de99dde473f3cc46bebb75e4e1fc700c431260 Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sun, 20 Aug 2023 15:11:28 +0200
Subject: [PATCH 10/15] Try to be smarter

---
 .github/workflows/main.yml  | 34 +++++++++++++++-------------------
 template/bootstrap.py.jinja |  4 ++++
 2 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a1ce117..d7a1175 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -46,9 +46,9 @@ jobs:
           set -eux
           tmpfolder=$(mktemp -d)
           
-          python -m copier copy -l -d author_name="My Name" -d labextension_name="${NAME}" -d python_name="${PYNAME}" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m copier copy -l -d author_name="My Name" -d labextension_name="${NAME}" -d python_name="${PYNAME}" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
+          
           ./scripts/pre-commit
           jupyter labextension list
           jupyter labextension list 2>&1 | grep -ie "${NAME}.*OK"
@@ -88,9 +88,9 @@ jobs:
           set -eux
           tmpfolder=$(mktemp -d)
           
-          python -m copier copy -l -d author_name="My Name" -d test=n -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m copier copy -l -d author_name="My Name" -d test=n -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
+          
           ./scripts/pre-commit
 
           jupyter labextension list
@@ -131,9 +131,9 @@ jobs:
           set -eux
           tmpfolder=$(mktemp -d)
           
-          python -m copier copy -l -d author_name="My Name" -d has_settings=y -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m copier copy -l -d author_name="My Name" -d has_settings=y -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
+          
           # It is not easily possible to get this version compatible with linter rules
           jlpm lint
           ./scripts/pre-commit
@@ -175,14 +175,14 @@ jobs:
 
       - name: Create server extension pip install
         env:
-          YARN_ENABLE_IMMUTABLE_INSTALLS: false
+          COPIER_SKIP_INSTALL_TASK: '1'
         run: |
           tmpfolder=$(mktemp -d)
           
           python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           cd $tmpfolder
           cat pyproject.toml
-          pip install .
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false pip install .
           pip install "jupyterlab>=4.0.0,<5"
 
       - name: Check pip install method
@@ -201,14 +201,11 @@ jobs:
         shell: bash
 
       - name: Create server extension pip develop
-        env:
-          YARN_ENABLE_IMMUTABLE_INSTALLS: false
         run: |
           tmpfolder=$(mktemp -d)
           
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           cd $tmpfolder
-          python bootstrap.py
 
           # Check unit tests are passing
           python -m pytest -vv -r ap --cov myextension
@@ -245,7 +242,7 @@ jobs:
 
       - name: Install server extension from a tarball
         env:
-          YARN_ENABLE_IMMUTABLE_INSTALLS: false
+          COPIER_SKIP_INSTALL_TASK: '1'
         run: |
           tmpfolder=$(mktemp -d)
           
@@ -253,7 +250,7 @@ jobs:
           cd $tmpfolder
           python -m pip install "jupyterlab>=4.0.0,<5"
           jupyter lab clean --all
-          python -m build $tmpfolder
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m build $tmpfolder
           cd dist
           python -m pip install myextension-0.1.0.tar.gz
 
@@ -350,9 +347,8 @@ jobs:
         run: |
           set -eux
           mkdir mytheme
-          python -m copier copy -l -d kind=theme -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . mytheme
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m copier copy -l -d kind=theme -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . mytheme
           pushd mytheme
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
           ./scripts/pre-commit
 
           jupyter labextension list
@@ -393,9 +389,8 @@ jobs:
           set -eux
           tmpfolder=$(mktemp -d)
           
-          python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           pushd $tmpfolder
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false python bootstrap.py
 
           ./scripts/pre-commit
 
@@ -436,7 +431,7 @@ jobs:
         run: |
           tmpfolder=$(mktemp -d)
           
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . $tmpfolder
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . $tmpfolder
 
       - name: Check conda environment
         shell: bash -el {0}
@@ -480,6 +475,7 @@ jobs:
       - name: Create pure frontend extension
         env:
           KIND: ${{ matrix.kind }}
+          COPIER_SKIP_INSTALL_TASK: '1'
         run: |
           set -eux
           tmpfolder=$(mktemp -d)
diff --git a/template/bootstrap.py.jinja b/template/bootstrap.py.jinja
index 4552b39..83cd21f 100755
--- a/template/bootstrap.py.jinja
+++ b/template/bootstrap.py.jinja
@@ -81,6 +81,10 @@ def install_extension():
         if not answer.lower().startswith('y'):
             return
 {% endif %}
+    if os.environ("COPIER_SKIP_INSTALL_TASK", "0") != "0":
+        print("Skipping installation task")
+        return
+
     print("\nInstalling the extension in development mode...")
 
     # Force uninstalling the extension to avoid trouble when installing in dev mode

From cff86d99746ce41f1b1592439c429af9a2f0b90b Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sun, 20 Aug 2023 15:13:14 +0200
Subject: [PATCH 11/15] Fix environment get syntax

---
 template/bootstrap.py.jinja | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/template/bootstrap.py.jinja b/template/bootstrap.py.jinja
index 83cd21f..418cc93 100755
--- a/template/bootstrap.py.jinja
+++ b/template/bootstrap.py.jinja
@@ -81,7 +81,7 @@ def install_extension():
         if not answer.lower().startswith('y'):
             return
 {% endif %}
-    if os.environ("COPIER_SKIP_INSTALL_TASK", "0") != "0":
+    if os.environ.get("COPIER_SKIP_INSTALL_TASK", "0") != "0":
         print("Skipping installation task")
         return
 

From 121880b194f16e4ee7082adf49f675cead485749 Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sun, 20 Aug 2023 15:25:45 +0200
Subject: [PATCH 12/15] More CI fixes

---
 .github/workflows/check-tests.yml | 10 +++++++---
 .github/workflows/main.yml        | 28 ++++++++++++++++++----------
 2 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/.github/workflows/check-tests.yml b/.github/workflows/check-tests.yml
index 5fc0671..d707a60 100644
--- a/.github/workflows/check-tests.yml
+++ b/.github/workflows/check-tests.yml
@@ -24,12 +24,14 @@ jobs:
 
       - name: Create the extension
         id: create-extension
+        env:
+          COPIER_SKIP_INSTALL_TASK: '1'
         run: |
           set -eux
           tmpfolder=$(mktemp -d)
           echo "extension_folder=${tmpfolder}" >> "$GITHUB_OUTPUT"
-          python -m copier copy -l -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
-          cat $tmpfolder/pyproject.toml
+          python -m copier copy -l -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . ${tmpfolder}
+          cat ${tmpfolder}/pyproject.toml
 
       - name: Test the extension
         working-directory: ${{ steps.create-extension.outputs.extension_folder }}
@@ -95,11 +97,13 @@ jobs:
 
       - name: Create the extension
         id: create-extension
+        env:
+          COPIER_SKIP_INSTALL_TASK: '1'
         run: |
           set -eux
           tmpfolder=$(mktemp -d)
-          python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . myextension
           echo "extension_folder=${tmpfolder}" >> "$GITHUB_OUTPUT"
+          python -m copier copy -l -d kind=mimerenderer -d viewer_name="My Viewer" -d mimetype="application/vnd.my_org.my_type" -d mimetype_name="my_type" -d file_extension=".my_type" -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . ${tmpfolder}
 
       - name: Install the extension
         working-directory: ${{ steps.create-extension.outputs.extension_folder }}
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d7a1175..903d39c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -174,10 +174,12 @@ jobs:
           git config --global user.email "github-actions[bot]@users.noreply.github.com"
 
       - name: Create server extension pip install
+        id: create-extension-1
         env:
           COPIER_SKIP_INSTALL_TASK: '1'
         run: |
           tmpfolder=$(mktemp -d)
+          echo "extension_folder=${tmpfolder}" >> "$GITHUB_OUTPUT"
           
           python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
           cd $tmpfolder
@@ -197,15 +199,17 @@ jobs:
           python -m jupyterlab.browser_check
 
           pip uninstall -y myextension jupyterlab
-          rm -rf $tmpfolder
+          rm -rf "${{ steps.create-extension-1.outputs.extension_folder }}"
         shell: bash
 
       - name: Create server extension pip develop
+        id: create-extension-2
         run: |
           tmpfolder=$(mktemp -d)
+          echo "extension_folder=${tmpfolder}" >> "$GITHUB_OUTPUT"
           
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
-          cd $tmpfolder
+          cd ${tmpfolder}
 
           # Check unit tests are passing
           python -m pytest -vv -r ap --cov myextension
@@ -230,27 +234,29 @@ jobs:
 
       - name: Build server extension in develop mode
         run: |
-          jupyter labextension build $tmpfolder
+          jupyter labextension build "${{ steps.create-extension-2.outputs.extension_folder }}"
 
           jupyter labextension uninstall myextension
           python -m pip uninstall -y myextension jupyterlab
 
       - run: |
           set -eux
-          rm -rf $tmpfolder
+          rm -rf "${{ steps.create-extension-2.outputs.extension_folder }}"
         shell: bash
 
       - name: Install server extension from a tarball
+        id: create-extension-3
         env:
           COPIER_SKIP_INSTALL_TASK: '1'
         run: |
           tmpfolder=$(mktemp -d)
+          echo "extension_folder=${tmpfolder}" >> "$GITHUB_OUTPUT"
           
           python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
-          cd $tmpfolder
+          cd ${tmpfolder}
           python -m pip install "jupyterlab>=4.0.0,<5"
           jupyter lab clean --all
-          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m build $tmpfolder
+          YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m build ${tmpfolder}
           cd dist
           python -m pip install myextension-0.1.0.tar.gz
 
@@ -266,10 +272,10 @@ jobs:
 
           python -m jupyterlab.browser_check
 
-          cp $tmpfolder/dist/*.tar.gz myextension.tar.gz
-          cp $tmpfolder/dist/*.whl myextension.whl
+          cp "${{ steps.create-extension-3.outputs.extension_folder }}"/dist/*.tar.gz myextension.tar.gz
+          cp "${{ steps.create-extension-3.outputs.extension_folder }}"/dist/*.whl myextension.whl
           python -m pip uninstall -y myextension jupyterlab
-          rm -rf $tmpfolder
+          rm -rf "${{ steps.create-extension-3.outputs.extension_folder }}"
         shell: bash
 
       - uses: actions/upload-artifact@v2
@@ -427,9 +433,11 @@ jobs:
           git config --global user.email "github-actions[bot]@users.noreply.github.com"
 
       - name: Create server extension with conda
+        id: create-extension
         shell: bash -el {0}
         run: |
           tmpfolder=$(mktemp -d)
+          echo "extension_folder=${tmpfolder}" >> "$GITHUB_OUTPUT"
           
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" --vcs-ref HEAD --UNSAFE . $tmpfolder
 
@@ -448,7 +456,7 @@ jobs:
           python -m jupyterlab.browser_check
 
           pip uninstall -y myextension jupyterlab
-          rm -rf $tmpfolder
+          rm -rf "${{ steps.create-extension.outputs.extension_folder }}"
 
   pnpm_linker:
     runs-on: ubuntu-latest

From bbae958a1c1837897f863426270ae8e07b1cba34 Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sun, 20 Aug 2023 15:43:47 +0200
Subject: [PATCH 13/15] Fix rerunning bootstrap

---
 .github/workflows/main.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 903d39c..e01d60c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -231,6 +231,7 @@ jobs:
           set -eux
           python bootstrap.py
         shell: bash
+        working-directory: ${{ steps.create-extension-2.outputs.extension_folder }}
 
       - name: Build server extension in develop mode
         run: |

From 0ad86665e8fb67e47d37478046f0fd26433afb9e Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sat, 9 Sep 2023 13:34:13 +0200
Subject: [PATCH 14/15] Debug CI

---
 .github/workflows/main.yml  | 21 +++++++++++----------
 template/bootstrap.py.jinja | 10 +++++-----
 2 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e01d60c..946592a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -253,13 +253,17 @@ jobs:
           tmpfolder=$(mktemp -d)
           echo "extension_folder=${tmpfolder}" >> "$GITHUB_OUTPUT"
           
-          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . $tmpfolder
-          cd ${tmpfolder}
+          python -m copier copy -l -d kind=server -d author_name="My Name" -d repository="https://github.com/test/lab-extension" -d venv="none" --vcs-ref HEAD --UNSAFE . ${tmpfolder}
+          
           python -m pip install "jupyterlab>=4.0.0,<5"
           jupyter lab clean --all
           YARN_ENABLE_IMMUTABLE_INSTALLS=false python -m build ${tmpfolder}
-          cd dist
-          python -m pip install myextension-0.1.0.tar.gz
+
+          cp ${tmpfolder}/dist/*.tar.gz myextension.tar.gz
+          cp ${tmpfolder}/dist/*.whl myextension.whl
+
+          tar list -f ${tmpfolder}/dist/myextension-0.1.0.tar.gz
+          python -m pip install ${tmpfolder}/dist/myextension-0.1.0.tar.gz
 
       - name: Check install tarball method
         run: |
@@ -272,15 +276,12 @@ jobs:
           jupyter lab build --dev-build --no-minimize
 
           python -m jupyterlab.browser_check
-
-          cp "${{ steps.create-extension-3.outputs.extension_folder }}"/dist/*.tar.gz myextension.tar.gz
-          cp "${{ steps.create-extension-3.outputs.extension_folder }}"/dist/*.whl myextension.whl
           python -m pip uninstall -y myextension jupyterlab
           rm -rf "${{ steps.create-extension-3.outputs.extension_folder }}"
         shell: bash
 
-      - uses: actions/upload-artifact@v2
-        if: startsWith(runner.os, 'Linux')
+      - uses: actions/upload-artifact@v3
+        if: startsWith(runner.os, 'Linux') && always()
         with:
           name: myextension-sdist
           path: |
@@ -310,7 +311,7 @@ jobs:
           restore-keys: |
             pip-3.7-
             pip-
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v3
         with:
           name: myextension-sdist
       - name: Install and Test
diff --git a/template/bootstrap.py.jinja b/template/bootstrap.py.jinja
index 418cc93..863f778 100755
--- a/template/bootstrap.py.jinja
+++ b/template/bootstrap.py.jinja
@@ -60,13 +60,16 @@ def create_conda_environment():
 
 {% endif %}
 def install_extension():
-    """Install the extension in development mode{% if venv == "conda" %} in the conda environment.
+    """Install the extension in development mode{% if venv == "conda" %} in the conda environment.{% endif %}
     """
+    if os.environ.get("COPIER_SKIP_INSTALL_TASK", "0") != "0":
+        print("Skipping installation task")
+        return
+{% if venv == "conda" %}
     mamba = which("mamba")
     conda_exe = "mamba" if mamba is not None else "conda"
     pre_command = [conda_exe, "run", "--name", ENVIRONMENT_NAME]
 {% else %}
-    """
     pre_command = []
     # Checking nodeJS is available
     try:
@@ -81,9 +84,6 @@ def install_extension():
         if not answer.lower().startswith('y'):
             return
 {% endif %}
-    if os.environ.get("COPIER_SKIP_INSTALL_TASK", "0") != "0":
-        print("Skipping installation task")
-        return
 
     print("\nInstalling the extension in development mode...")
 

From d8b9a97c0f10fd7c97e62b55abd1966cad98a611 Mon Sep 17 00:00:00 2001
From: Frederic COLLONVAL <fcollonval@users.noreply.github.com>
Date: Sat, 9 Sep 2023 18:09:54 +0200
Subject: [PATCH 15/15] Restore removed lint command

---
 .github/workflows/main.yml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 946592a..445df7c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -186,6 +186,7 @@ jobs:
           cat pyproject.toml
           YARN_ENABLE_IMMUTABLE_INSTALLS=false pip install .
           pip install "jupyterlab>=4.0.0,<5"
+          jlpm lint:check
 
       - name: Check pip install method
         run: |
@@ -262,7 +263,9 @@ jobs:
           cp ${tmpfolder}/dist/*.tar.gz myextension.tar.gz
           cp ${tmpfolder}/dist/*.whl myextension.whl
 
-          tar list -f ${tmpfolder}/dist/myextension-0.1.0.tar.gz
+          tar -tf ${tmpfolder}/dist/myextension-0.1.0.tar.gz
+
+          python -m pip uninstall -y myextension || true
           python -m pip install ${tmpfolder}/dist/myextension-0.1.0.tar.gz
 
       - name: Check install tarball method