gitlab-ci, build/windows: Do not build unneeded dist assets on CI

There is no need to generate Installer assets on Store (and vice versa) or
on build-only pipelines. Let's build only the necessary, mitigating #11385

.gitlab-ci.yml

@@ -424,9 +424,29 @@ gimp-win-x64-cross:
 .win:
   extends: .default
   rules:
+    - if: '$CI_MERGE_REQUEST_LABELS =~ /.*5. Windows Installer.*/ && $CI_MERGE_REQUEST_LABELS =~ /.*5. Microsoft Store.*/'
+      interruptible: true
+      variables:
+        INSTALLER_OPTION: '-Dwindows-installer=true'
+        STORE_OPTION: '-Dms-store=true'
     - if: '$CI_MERGE_REQUEST_LABELS =~ /.*5. Windows Installer.*/'
       interruptible: true
+      variables:
+        INSTALLER_OPTION: '-Dwindows-installer=true'
+    - if: '$CI_MERGE_REQUEST_LABELS =~ /.*5. Microsoft Store.*/ && $CI_JOB_NAME =~ /.*64.*/'
+      interruptible: true
+      variables:
+        STORE_OPTION: '-Dms-store=true'
+    - if: '$GIMP_CI_WIN_INSTALLER != null && $GIMP_CI_MS_STORE != null'
+      variables:
+        INSTALLER_OPTION: '-Dwindows-installer=true'
+        STORE_OPTION: '-Dms-store=true'
     - if: '$GIMP_CI_WIN_INSTALLER != null'
+      variables:
+        INSTALLER_OPTION: '-Dwindows-installer=true'
+    - if: '$GIMP_CI_MS_STORE != null && $CI_JOB_NAME =~ /.*64.*/'
+      variables:
+        STORE_OPTION: '-Dms-store=true'
     - <<: *CI_RELEASE
   variables:
     CHERE_INVOKING: "yes"
@@ -438,9 +458,6 @@ gimp-win-x64-cross:
   extends: .win
   rules:
     - !reference [.win, rules]
-    - if: '$CI_MERGE_REQUEST_LABELS =~ /.*5. Microsoft Store.*/'
-      interruptible: true
-    - if: '$GIMP_CI_MS_STORE != null'
     - if: '$GIMP_CI_MSYS2_WIN_AARCH64 != null'
   tags:
     - windows-aarch64
@@ -495,9 +512,6 @@ gimp-win-a64:
   extends: .win
   rules:
     - !reference [.win, rules]
-    - if: '$CI_MERGE_REQUEST_LABELS =~ /.*5. Microsoft Store.*/'
-      interruptible: true
-    - if: '$GIMP_CI_MS_STORE != null'
     - if: '$GIMP_CI_MSYS2_WIN64 != null'
   tags:
     - win32-ps

build/windows/2_build-gimp-msys2.sh

@@ -44,11 +44,16 @@ done
 # Build GIMP
 if [ -z "$GITLAB_CI" ] && [ "$1" != "--relocatable" ]; then
   echo "(INFO): GIMP will be built in MSYS2 friendly mode"
-  export MESON_OPTIONS='-Drelocatable-bundle=no -Dwindows-installer=false -Dms-store=false'
+  export bundle_option='-Drelocatable-bundle=no'
 elif [ "$GITLAB_CI" ] || [ "$1" = '--relocatable' ]; then
   echo "(INFO): GIMP will be built as a relocatable bundle"
-  export MESON_OPTIONS='-Drelocatable-bundle=yes -Dwindows-installer=true -Dms-store=true'
+  export bundle_option='-Drelocatable-bundle=yes'
 fi
+if [ -z "$GITLAB_CI" ] && [ "$1" = '--relocatable' ]; then
+  export INSTALLER_OPTION='-Dwindows-installer=true'
+  export STORE_OPTION='-Dms-store=true'
+fi
+export MESON_OPTIONS="$bundle_option $INSTALLER_OPTION $STORE_OPTION"
 
 if [ ! -f "_build/build.ninja" ]; then
   mkdir -p "_build" && cd "_build"