library: allow redefining architectures to build Debian-based images for.

mainline is now based on trixie, which removes mips64le and adds
riscv64.

stable is currently kept as-is.

Author: thresheek

generate-stackbrew-library.sh

@@ -13,6 +13,12 @@ base=debian
 
 versions=( mainline stable )
 
+declare -A debian_architectures
+debian_architectures=(
+    [mainline]='amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x'
+    [stable]='amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x'
+)
+
 # get the most recent commit which modified any of "$@"
 fileCommit() {
 	git log -1 --format='format:%H' HEAD -- "$@"
@@ -69,7 +75,7 @@ for version in "${versions[@]}"; do
 	echo
 	cat <<-EOE
 		Tags: $(join ', ' "${versionAliases[@]}"), $(join ', ' "${debianAliases[@]}")
-		Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x
+		Architectures: ${debian_architectures[$version]}
 		GitCommit: $commit
 		Directory: $version/$base
 	EOE
@@ -84,7 +90,7 @@ for version in "${versions[@]}"; do
 		echo
 		cat <<-EOE
 			Tags: $(join ', ' "${variantAliases[@]}")
-			Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x
+			Architectures: ${debian_architectures[$version]}
 			GitCommit: $commit
 			Directory: $version/$variant
 		EOE