build/linux: Take Snap version: from meson.build

This reduces the burden over the project maintainer.

build/linux/snap/3_dist-gimp-snapcraft.sh

@@ -32,7 +32,7 @@ NAME=$(awk '/^name:/ { print $2 }' snapcraft.yaml)
 TRACK=$(awk -F. '/-Dbuild-id=/ { print $NF }' snapcraft.yaml)
 
 ## Get info about GIMP version
-GIMP_VERSION=$(awk '/^version:/ { print $2 }' snapcraft.yaml)
+GIMP_VERSION=$(awk -F"'" '/version:/ {print $2; exit}' meson.build)
 gimp_release=$([ "$(awk '/^grade:/ { print $2 }' snapcraft.yaml)" != 'devel' ] && echo true || echo false)
 printf "(INFO): Name: $NAME (track: $TRACK) | Version: $GIMP_VERSION\n"
 

build/linux/snap/README.md

@@ -37,7 +37,7 @@ ls "$(echo /snap/gnome*-sdk/current/usr/lib/$(gcc -print-multiarch)/pkgconfig)"
 
 ## Versioning the snap
 
-Aside from setting the version of gimp, we also:
+Unlike the flatpak, we do not need to manually set babl, gegl or GIMP tags, just:
 
 * For a **nightly** build, set "devel" on "grade" and
   use "experimental" on build-id at gimp part "meson-parameters".

build/linux/snap/snapcraft.yaml

@@ -1,6 +1,5 @@
 name: gimp
 adopt-info: gimp
-version: 3.1.5
 grade: devel
 base: core24
 compression: lzo
@@ -143,6 +142,9 @@ parts:
       - gegl
     source: .
     source-type: local
+    override-pull: |
+      craftctl default
+      craftctl set version="$(awk -F"'" '/version:/ {print $2; exit}' $CRAFT_PART_SRC/meson.build)"
     build-environment: *SNAP_ENVIRON
     plugin: meson
     meson-parameters: