Resume builds

.gitlab-ci.yml

 ---
+variables:
+  VERSION: '89.0.4389.114'
+
 .template: &template
   image: '${CI_REGISTRY}/nest/stage1:${CPU}-workstation'
   stage: 'build'
   tags: ['nest']
   script:
+    - 'export EMERGE_DEFAULT_OPTS="$CI_HOST_EMERGE_DEFAULT_OPTS"
+              MAKEOPTS="$CI_HOST_MAKEOPTS"
+              PORTAGE_TMPDIR=/cache'
     - 'emerge --sync'
-    - 'emerge -v1 -j1 -k n app-arch/snappy' # Ensure DISTCC_DIR is set up correctly
-    - 'emerge -v1 -j --onlydeps www-client/chromium'
-    - 'emerge -v -j1 --buildpkgonly www-client/chromium'
-  variables:
-    EMERGE_DEFAULT_OPTS: '$CI_HOST_EMERGE_DEFAULT_OPTS'
-    MAKEOPTS: '$CI_HOST_MAKEOPTS'
-    PORTAGE_TMPDIR: '/cache'
+    - '[ -d /cache/portage/.distcc ] || emerge -v1 -j1 -k n app-arch/snappy'
+    - 'emerge -v --onlydeps --usepkg "=www-client/chromium-${VERSION}"'
+    - 'ebuild "/var/db/repos/gentoo/www-client/chromium/chromium-${VERSION}.ebuild" package'
 
-'Build haswell':
+.'Build haswell':
   <<: *template
   variables:
     CPU: 'haswell'
 
-'Build cortex-a72-a53-crypto':
+.'Build cortex-a72-a53-crypto':
   <<: *template
   variables:
     CPU: 'cortex-a72-a53-crypto'