build/windows: Rework scripts local compatibility layer

Since !1171 we can use the CI scripts locally, but the initial implementation,
after some commits, revealed to be troublesome. So, now reworked to be simple.

build/windows/gitlab-ci/1_build-deps-msys2.sh

@@ -12,27 +12,25 @@ else # [[ "$MSYSTEM_CARCH" == "i686" ]];
   export ARTIFACTS_SUFFIX="-x86"
 fi
 
-if [[ "$BUILD_TYPE" != "CI_NATIVE" ]]; then
-  # Make the script callable from every directory
+if [[ "$BUILD_TYPE" == "CI_NATIVE" ]]; then
+  GIMP_DIR=""
+else
+  # Make the script work locally
   if [[ "$0" != "build/windows/gitlab-ci/1_build-deps-msys2.sh" ]]; then
-    GIMP_EXTDIR="$0"
-    GIMP_EXTDIR=$(sed 's|build/windows/gitlab-ci/1_build-deps-msys2.sh||g' <<< $GIMP_EXTDIR)
-    GIMP_DIR="$GIMP_EXTDIR"
+    echo "To run this script locally, please do it from to the gimp git folder"
+    exit 1
   else
-    GIMP_GITDIR="$(pwd)"
-    GIMP_GITDIR=$(sed 's|build/windows/gitlab-ci||g' <<< $GIMP_GITDIR)
-    GIMP_GITDIR=$(sed 's|build/windows||g' <<< $GIMP_GITDIR)
-    GIMP_GITDIR=$(sed 's|build||g' <<< $GIMP_GITDIR)
-    GIMP_DIR="$GIMP_GITDIR"
+    GIMP_DIR=$(echo "${PWD##*/}/")
+    DEPS_DIR=$(dirname $PWD)
+    cd $DEPS_DIR
   fi
-  cd $GIMP_DIR
 
   pacman --noconfirm -Suy
 fi
 
 
 # Install the required (pre-built) packages for babl and GEGL
-DEPS_LIST=$(cat build/windows/gitlab-ci/all-deps-uni.txt)
+DEPS_LIST=$(cat ${GIMP_DIR}build/windows/gitlab-ci/all-deps-uni.txt)
 DEPS_LIST=$(sed "s/\${MINGW_PACKAGE_PREFIX}-/${MINGW_PACKAGE_PREFIX}-/g" <<< $DEPS_LIST)
 DEPS_LIST=$(sed 's/\\//g' <<< $DEPS_LIST)
 
@@ -108,10 +106,3 @@ configure_or_build babl "-Dwith-docs=false"
 configure_or_build gegl "-Ddocs=false \
                          -Dcairo=enabled -Dumfpack=enabled \
                          -Dopenexr=enabled -Dworkshop=true"
-
-
-if [[ "$BUILD_TYPE" != "CI_NATIVE" ]]; then
-  mv _babl ~
-  mv _gegl ~
-  mv "${GIMP_PREFIX}" ~
-fi

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

@@ -22,17 +22,10 @@ if [[ "$BUILD_TYPE" == "CI_NATIVE" ]]; then
   rm -fr ~/_install${ARTIFACTS_SUFFIX}
   mv "_install${ARTIFACTS_SUFFIX}" ~
 else
-  # Make the script callable from every directory
+  # Make the script work locally
   if [[ "$0" != "build/windows/gitlab-ci/2_build-gimp-msys2.sh" ]]; then
-    GIMP_EXTDIR="$0"
-    GIMP_EXTDIR=$(sed 's|build/windows/gitlab-ci/2_build-gimp-msys2.sh||g' <<< $GIMP_EXTDIR)
-    cd $GIMP_EXTDIR
-  else
-    GIMP_GITDIR="$(pwd)"
-    GIMP_GITDIR=$(sed 's|build/windows/gitlab-ci||g' <<< $GIMP_GITDIR)
-    GIMP_GITDIR=$(sed 's|build/windows||g' <<< $GIMP_GITDIR)
-    GIMP_GITDIR=$(sed 's|build||g' <<< $GIMP_GITDIR)
-    cd $GIMP_GITDIR
+    echo "To run this script locally, please do it from to the gimp git folder"
+    exit 1
   fi
 
   pacman --noconfirm -Suy
@@ -40,6 +33,7 @@ fi
 
 
 # Install the required (pre-built) packages for GIMP
+GIMP_DIR=""
 DEPS_CODE=$(cat build/windows/gitlab-ci/1_build-deps-msys2.sh)
 DEPS_CODE=$(sed -n '/# Install the/,/# End of install/p' <<< $DEPS_CODE)
 echo "$DEPS_CODE" | bash

build/windows/gitlab-ci/3_package-gimp-uni_base.sh

@@ -25,6 +25,7 @@ fi
 
 if [[ "$BUILD_TYPE" != "CI_CROSS" ]]; then
   # Install the required (pre-built) packages again
+  GIMP_DIR=""
   DEPS_CODE=$(cat build/windows/gitlab-ci/1_build-deps-msys2.sh)
   DEPS_CODE=$(sed -n '/# Install the/,/# End of install/p' <<< $DEPS_CODE)
   echo "$DEPS_CODE" | bash