chore: avoid vendoring charm libs

This avoids having big diffs when bumping the version of charm libs.

.github/workflows/ci.yaml

@@ -45,6 +45,8 @@ jobs:
         uses: astral-sh/setup-uv@v4
         with:
           version: "0.5.8"
+      - name: Install Charmcraft
+        run: sudo snap install charmcraft --classic --channel latest/stable
       - name: Run linters
         run: just lint
 
@@ -62,6 +64,8 @@ jobs:
         uses: astral-sh/setup-uv@v4
         with:
           version: 0.5.8
+      - name: Install Charmcraft
+        run: sudo snap install charmcraft --classic --channel latest/stable
       - name: Run unit tests
         run: just unit
 
@@ -79,6 +83,8 @@ jobs:
         uses: astral-sh/setup-uv@v4
         with:
           version: 0.5.8
+      - name: Install Charmcraft
+        run: sudo snap install charmcraft --classic --channel latest/stable
       - name: Run tests
         run: just typecheck
 

.gitignore

@@ -7,4 +7,9 @@ __pycache__/
 *.py[cod]
 .idea
 .vscode/
-requirements.txt
+requirements.txt
+
+# Ignore libs except the filesystem_client
+
+lib/charms/*
+!lib/charms/filesystem_client/

charmcraft.yaml

@@ -31,6 +31,12 @@ parts:
       just requirements
       craftctl default
 
+charm-libs:
+  - lib: operator-libs-linux.apt
+    version: "0.15"
+  - lib: operator-libs-linux.systemd
+    version: "1.4"
+
 subordinate: true
 
 requires:

justfile

@@ -1,4 +1,5 @@
 uv := `which uv`
+charmcraft := `which charmcraft`
 
 project_dir := justfile_directory()
 
@@ -13,10 +14,18 @@ export PYTHONBREAKPOINT := "pdb.set_trace"
 
 uv_run := "uv run --frozen --extra dev"
 
-# Regenerate uv.lock
+# Regenerate uv.lock.
 lock:
     uv lock --no-cache
 
+# Fetch the required charm libraries.
+fetch-libs:
+    charmcraft fetch-libs
+
+# Create a development environment.
+env: lock fetch-libs
+    uv sync --extra dev
+
 # Upgrade uv.lock with the latest deps
 upgrade:
     uv lock --upgrade --no-cache
@@ -27,23 +36,22 @@ requirements: lock
 
 # Apply coding style standards to code
 fmt: lock
-    echo {{PYTHONPATH}}
     {{uv_run}} ruff format {{all}}
     {{uv_run}} ruff check --fix {{all}}
 
 # Check code against coding style standards
-lint: lock
+lint: lock fetch-libs
     {{uv_run}} codespell {{lib}}
     {{uv_run}} codespell {{project_dir}}
     {{uv_run}} ruff check {{all}}
     {{uv_run}} ruff format --check --diff {{all}}
 
 # Run static type checks
-typecheck *args: lock
+typecheck *args: lock fetch-libs
     {{uv_run}} pyright {{args}}
 
 # Run unit tests
-unit *args: lock
+unit *args: lock fetch-libs
     {{uv_run}} coverage run \
         --source={{src}} \
         --source={{lib}} \
@@ -56,7 +64,7 @@ unit *args: lock
     {{uv_run}} coverage report
 
 # Run integration tests
-integration *args: lock
+integration *args: lock fetch-libs
     {{uv_run}} pytest \
         -v \
         -s \