ci: Don't build unnecessary Flatpak modules when they are not needed

.gitlab-ci/run_checks.yml

@@ -1,5 +1,7 @@
 # Configure and run code checks
 
+include: '.gitlab-ci/utils.yml'
+
 # Custom checks and lints
 checks:
   stage: check
@@ -9,6 +11,8 @@ checks:
 
 # Lint the code
 cargo-clippy:
+  extends:
+    - .remove_build_only_modules
   stage: check
   image: 'quay.io/gnome_infrastructure/gnome-runtime-images:gnome-master'
   tags:

.gitlab-ci/test.yml

@@ -1,5 +1,7 @@
 # Tests after the app is built.
 
+include: '.gitlab-ci/utils.yml'
+
 # Validate the metainfo with Flathub's tool.
 lint-metainfo:
   stage: test
@@ -17,17 +19,23 @@ lint-metainfo:
 
 # Run the Rust tests.
 rust-tests:
+  extends:
+    - .remove_build_only_modules
   stage: test
   image: 'quay.io/gnome_infrastructure/gnome-runtime-images:gnome-master'
   tags:
     - flatpak
-  variables:
-    TMP_MANIFEST_PATH: "build-aux/org.gnome.Fractal.CiRust.json"
   script:
-    # Add a module for nextest to the Flatpak manifest
-    - jq --slurpfile nextest .gitlab-ci/nextest.module.json '.modules = [$nextest[], .modules[]]' ${MANIFEST_PATH} > ${TMP_MANIFEST_PATH}
-    - flatpak-builder --keep-build-dirs --user --disable-rofiles-fuse --stop-at=${FLATPAK_MODULE} flatpak_app --repo=repo ${BRANCH:+--default-branch=$BRANCH} ${TMP_MANIFEST_PATH}
-    - echo "cargo-nextest nextest run --config-file ../.gitlab-ci/nextest.toml" | flatpak-builder --disable-rofiles-fuse --build-shell=${FLATPAK_MODULE} flatpak_app ${TMP_MANIFEST_PATH}
+    # Create a temporary file.
+    - TMP_FILE=$(mktemp)
+    # Add a module for nextest to the Flatpak manifest and write it to the temporary file.
+    - jq --slurpfile nextest .gitlab-ci/nextest.module.json '.modules = [$nextest[], .modules[]]' ${MANIFEST_PATH} > ${TMP_FILE}
+    # Replace the manifest with the temporary file.
+    - mv $TMP_FILE ${MANIFEST_PATH}
+    # Initialize the Flatpak sandbox.
+    - flatpak-builder --keep-build-dirs --user --disable-rofiles-fuse --stop-at=${FLATPAK_MODULE} flatpak_app --repo=repo ${BRANCH:+--default-branch=$BRANCH} ${MANIFEST_PATH}
+    # Run the tests.
+    - echo "cargo-nextest nextest run --config-file ../.gitlab-ci/nextest.toml" | flatpak-builder --disable-rofiles-fuse --build-shell=${FLATPAK_MODULE} flatpak_app ${MANIFEST_PATH}
   dependencies: []
   artifacts:
     reports:
@@ -35,6 +43,8 @@ rust-tests:
 
 # Test that there are no errors in the docs.
 build-docs:
+  extends:
+    - .remove_build_only_modules
   stage: test
   image: 'quay.io/gnome_infrastructure/gnome-runtime-images:gnome-master'
   tags:

.gitlab-ci/utils.yml

@@ -0,0 +1,16 @@
+# Utilities to include in other jobs.
+
+# Remove the Flatpak modules that are only necessary when building the app with meson.
+.remove_build_only_modules:
+  variables:
+    # JSON array of the names of the Flatpak modules to remove.
+    MODULES_TO_REMOVE: '["grass", "glycin-loaders"]'
+  before_script:
+    # Create a temporary file.
+    - TMP_FILE=$(mktemp)
+    # Remove the modules in the manifest and write the output to the temporary file.
+    - jq --argjson modules_to_remove "${MODULES_TO_REMOVE}"  'del(.modules[] | select(IN(.name; $modules_to_remove | .[])))' ${MANIFEST_PATH} > $TMP_FILE
+    # Replace the manifest with the temporary file.
+    - mv $TMP_FILE ${MANIFEST_PATH}
+    # Use meson's build-env profile.
+    - sed -i "s|-Dprofile=development|-Dprofile=build-env|g" ${MANIFEST_PATH}

meson.build

@@ -66,7 +66,12 @@ iconsdir = datadir / 'icons'
 podir = meson.project_source_root() / 'po'
 gettext_package = meson.project_name()
 
-if get_option('profile') == 'development'
+# When the `build-env` profile is used, we only want to set up the build
+# environment for the sandbox, we will not try to compile the app, so we can
+# remove some build steps.
+build_env_only = get_option('profile') == 'build-env'
+
+if get_option('profile') == 'development' or build_env_only
   profile = 'Devel'
   application_id += '.Devel'
 elif get_option('profile') == 'hack'
@@ -94,8 +99,11 @@ if profile == 'Devel'
   run_command('cp', '-f', 'hooks/pre-commit.hook', '.git/hooks/pre-commit')
 endif
 
-subdir('data')
-subdir('po')
+if not build_env_only
+  subdir('data')
+  subdir('po')
+endif
+
 subdir('src')
 
 gnome.post_install(

meson.options

@@ -6,6 +6,7 @@ option(
     'beta',
     'development',
     'hack',
+    'build-env',
   ],
   value: 'default',
   description: 'The build profile for Fractal. One of "default", "beta", "development" or "hack".'

src/meson.build

@@ -42,6 +42,12 @@ endif
 
 cargo_env = [ 'CARGO_HOME=' + meson.project_build_root() / 'cargo-home' ]
 
+if build_env_only
+  depends = []
+else
+  depends = [resources, ui_resources]
+endif
+
 custom_target(
   'cargo-build',
   build_by_default: true,
@@ -50,7 +56,7 @@ custom_target(
   console: true,
   install: true,
   install_dir: bindir,
-  depends: [resources, ui_resources],
+  depends: depends,
   command: [
     'env',
     cargo_env,