gitlab-ci, build/windows: Make crossroad scripts self-contained

This make them easier to understand and to run local, as we do with native ones

(They can't be run local yet, further changes will try to acomplish this a bit)

.gitlab-ci.yml

@@ -406,14 +406,8 @@ gimp-flatpak-x64:
     - if: '$GIMP_CI_CROSSROAD_WIN64 != null'
   image: $CI_REGISTRY_IMAGE:build-debian-latest
   variables:
-    # Needed because by default, Debian has now changed
-    # "sysconfig.get_default_scheme()" from "posix_prefix" to "posix_local" which
-    # adds a local/ folder to the install prefix of setup.py. This environment
-    # variable overrides this behavior.
-    DEB_PYTHON_INSTALL_LAYOUT: "deb"
-    PATH: "$CI_PROJECT_DIR/.local/bin:$CI_PROJECT_DIR/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
-    XDG_DATA_HOME: "$CI_PROJECT_DIR/.local/share/"
-  # TODO: Crossroads handling of universal variables still not perfect
+  # FIXME: Crossroads handling of universal variables still not perfect
+  # The cause is: https://gitlab.gnome.org/GNOME/gimp/-/issues/11544
   before_script: []
 
 deps-win-x64-cross:
@@ -431,7 +425,6 @@ deps-win-x64-cross:
     - !reference [.default, cache]
   script:
     - bash -x build/windows/gitlab-ci/1_build-deps-crossroad.sh
-    - crossroad w64 gimp --run="build/windows/gitlab-ci/1_build-deps-crossroad.sh"
   artifacts:
     paths:
       - .local/
@@ -447,7 +440,6 @@ gimp-win-x64-cross:
   stage: gimp
   script:
     - bash -x build/windows/gitlab-ci/2_build-gimp-crossroad.sh
-    - crossroad w64 gimp --run="build/windows/gitlab-ci/2_build-gimp-crossroad.sh"
     - bash -x build/windows/gitlab-ci/3_bundle-gimp-uni_base.sh
   artifacts:
     expose_as: 'Windows zip'

build/windows/gitlab-ci/1_build-deps-crossroad.sh

@@ -13,12 +13,17 @@ apt-get install -y --no-install-recommends \
 git clone --depth $GIT_DEPTH https://gitlab.freedesktop.org/crossroad/crossroad.git
 cd crossroad
 git apply ../build/windows/patches/0001-platforms-Enable-ccache.patch
+# Needed because Debian adds by default a local/ folder to the install
+# prefix of setup.py. This environment variable overrides this behavior.
+export DEB_PYTHON_INSTALL_LAYOUT="deb"
 ./setup.py install --prefix=`pwd`/../.local
 cd ..
-exit 0
 
 
 # CROSSROAD ENV
+export PATH="$PWD/.local/bin:$PATH"
+export XDG_DATA_HOME="$PWD/.local/share"
+crossroad w64 gimp --run="build/windows/gitlab-ci/1_build-deps-crossroad.sh"
 else
 export ARTIFACTS_SUFFIX="-x64"
 

build/windows/gitlab-ci/2_build-gimp-crossroad.sh

@@ -23,6 +23,9 @@ fi
 
 
 # CROSSROAD ENV
+export PATH="$PWD/.local/bin:$PWD/bin:$PATH"
+export XDG_DATA_HOME="$PWD/.local/share"
+crossroad w64 gimp --run="build/windows/gitlab-ci/2_build-gimp-crossroad.sh"
 else
 export ARTIFACTS_SUFFIX="-x64"