ci: Move subprojects cache into /var/cache

Functionally identical, but a better location to
place them.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8763>

.devcontainer/devcontainer.json

@@ -3,7 +3,7 @@
     "image": "registry.freedesktop.org/gstreamer/gstreamer/amd64/fedora:gst-toolbox-main",
     "containerUser": "containeruser",
     "remoteUser": "containeruser",
-    "postCreateCommand": ["python3", "${containerWorkspaceFolder}/ci/scripts/handle-subprojects-cache.py" ,"--cache-dir", "/subprojects", "subprojects/"],
+    "postCreateCommand": ["python3", "${containerWorkspaceFolder}/ci/scripts/handle-subprojects-cache.py" ,"--cache-dir", "/var/cache/subprojects", "subprojects/"],
     "privileged": false,
     "capAdd": [ "SYS_PTRACE" ],
     "customizations": {

.gitlab-ci.yml

@@ -353,7 +353,7 @@ pre-commit checks:
     BUILD_GST_DEBUG: "-Dgstreamer:gst_debug=true"
     GST_WERROR: "true"
     MESON_ARGS: "${DEFAULT_MESON_ARGS}"
-    SUBPROJECTS_CACHE_DIR: "/subprojects"
+    SUBPROJECTS_CACHE_DIR: "/var/cache/subprojects"
     # Avoid weird issue about cross-device links
     # https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3197
     GI_SCANNER_DISABLE_CACHE: "1"
@@ -381,7 +381,6 @@ pre-commit checks:
   variables:
     GST_WERROR: "true"
     MESON_ARGS: "${SIMPLE_BUILD}"
-    SUBPROJECTS_CACHE_DIR: "/subprojects"
   script:
     - $CI_PROJECT_DIR/ci/scripts/build.sh build/
     - ./gst-env.py gst-inspect-1.0 --version
@@ -683,7 +682,7 @@ abi-check:
   variables:
     GST_WERROR: "true"
     MESON_ARGS: "${SIMPLE_BUILD}"
-    SUBPROJECTS_CACHE_DIR: "/subprojects"
+    SUBPROJECTS_CACHE_DIR: !reference [".build", "variables", SUBPROJECTS_CACHE_DIR]
 
     # Avoid weird issue about cross-device links
     # https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3197
@@ -775,7 +774,7 @@ check video formats:
     MESON_ARGS: "${SIMPLE_BUILD}"
     BUILD_GST_DEBUG: "-Dgstreamer:gst_debug=true"
     GST_WERROR: "true"
-    SUBPROJECTS_CACHE_DIR: "/subprojects"
+    SUBPROJECTS_CACHE_DIR: !reference [".build", "variables", SUBPROJECTS_CACHE_DIR]
     VIDEO_TOKEN: "GST_VIDEO_FORMATS_ALL_STR"
     VIDEO_HEADER: "subprojects/gst-plugins-base/gst-libs/gst/video/video-format.h"
     WL_TOKEN: "GST_WL_VIDEO_FORMATS"
@@ -806,8 +805,6 @@ gstreamer-full static build:
     MESON_ARGS: >-
       -Ddoc=disabled
       -Dqt5=disabled -Dqt6=enabled
-
-    SUBPROJECTS_CACHE_DIR: "/subprojects"
   script:
   - $CI_PROJECT_DIR/ci/scripts/build.sh build/
   - meson test -C build -v test-gst-full
@@ -832,7 +829,6 @@ gstreamer-full-minimal static build:
       -Dgst-full-typefind-functions=typefindfunctions:wav,flv
       -Dgst-full-device-providers=alsa:alsadeviceprovider
       -Dgst-full-dynamic-types=pbtypes:video_multiview_flagset
-    SUBPROJECTS_CACHE_DIR: "/subprojects"
 
   script:
   - $CI_PROJECT_DIR/ci/scripts/build.sh build/
@@ -874,7 +870,6 @@ fluster v4l2-stateless on visl:
       -Dgst-plugins-base:typefind=enabled
       -Dgst-plugins-base:playback=enabled
       -Dgst-plugins-good:matroska=enabled
-    SUBPROJECTS_CACHE_DIR: "/subprojects"
   script:
   - $CI_PROJECT_DIR/ci/scripts/build.sh build/
   - meson test -C build -v --suite v4l2-stateless-decoders
@@ -1019,7 +1014,6 @@ valgrind ges:
       -Dgst-plugins-bad:svthevcenc=disabled
     # Disable werror for the docs build, we don't need it
     GST_WERROR: 'false'
-    SUBPROJECTS_CACHE_DIR: "/subprojects"
     CI_ARTIFACTS_URL: "${CI_PROJECT_URL}/-/jobs/${CI_JOB_ID}/artifacts/raw/"
   script:
     - $CI_PROJECT_DIR/ci/scripts/build-docs.sh build/

ci/scripts/create-subprojects-cache.sh

@@ -2,17 +2,15 @@
 
 set -eux
 
+# Avoid the cache being owned by root
+# and make sure its readable to anyone
+chown containeruser:containeruser --recursive /var/cache/subprojects/
+chmod --recursive a+r /var/cache/subprojects/
+
 # Path where cbuild checks out the repo
 cd /tmp/clone/
 # get gstreamer and make all subprojects available
 git submodule update --init --depth=1
 meson subprojects download
-./ci/scripts/handle-subprojects-cache.py --build --cache-dir /subprojects /tmp/clone/subprojects/
+./ci/scripts/handle-subprojects-cache.py --build --cache-dir /var/cache/subprojects/ /tmp/clone/subprojects/
 
-# Avoid the cache being owned by root
-# and make sure its readable to anyone
-chown containeruser:containeruser --recursive /subprojects/
-chmod --recursive a+r /subprojects/
-
-# Now remove the gstreamer clone
-rm -rf /gstreamer

ci/scripts/handle-subprojects-cache.py

@@ -12,7 +12,7 @@ import subprocess
 PARSER = argparse.ArgumentParser()
 PARSER.add_argument('subprojects_dir')
 PARSER.add_argument('--build', action="store_true", default=False)
-PARSER.add_argument('--cache-dir', default="/subprojects")
+PARSER.add_argument('--cache-dir', default="/var/cache/subprojects/")
 
 
 def create_cache_in_image(options):