gitlabci: Improve caching

.gitlab-ci.yml

@@ -13,6 +13,11 @@ stages:
     before_script:
         - apt-get update -yqq
         - apt-get install -yqq --no-install-recommends build-essential libgtk-3-dev meson
+
+        - mkdir -p .cargo_cache
+        # Only stuff inside the repo directory can be cached
+        # Override the CARGO_HOME variable to force it location
+        - export CARGO_HOME="${PWD}/.cargo_cache"
     script:
         - rustc -Vv && cargo -Vv
         # Force regeneration of gresources regardless of artifacts chage
@@ -21,6 +26,14 @@ stages:
         - cargo build
         - cargo test -- --test-threads=1
         - cargo test -- --test-threads=1 --ignored
+    cache:
+        # JOB_NAME - Each job will have it's own cache
+        # COMMIT_REF_SLUG = Lowercase name of the branch
+        # ^ Keep diffrerent caches for each branch
+        key: "$CI_JOB_NAME-$CI_COMMIT_REF_SLUG"
+        paths:
+          - target/
+          - .cargo_cache/
 
 stable:test:
     # https://hub.docker.com/_/rust/
@@ -50,6 +63,7 @@ flatpak:
         key: "$CI_JOB_NAME-$CI_COMMIT_REF_SLUG"
         paths:
           - .flatpak-builder/cache/
+          - target/
 
 # Configure and run rustfmt on nightly
 # Exits and builds fails if on bad format