ci: Install stack from git when necessary

1 files changed, 46 insertions, 0 deletions

diff --git a/scripts/ci/steps/25-deps.sh b/scripts/ci/steps/25-deps.sh
new file mode 100644
index 0000000..3a0cb21
--- /dev/null
+++ b/scripts/ci/steps/25-deps.sh
@@ -0,0 +1,46 @@
+
+verlte() {
+    [  "$1" = "$(printf '%s\n%s\n' "$1" "$2" | sort -V | head -n1)" ]
+}
+
+mkdir -p "$build_dir/bin"
+
+
+if command -v stack; then
+	stack_ver=$(stack --numeric-version)
+else
+	stack_ver=0
+fi
+
+ghc_ver=$(ghc --numeric-version)
+
+# we need at least 1.9.4 for `stack ide packages --cabal-files --stdout`
+if verlte "$stack_ver" 1.9.3 &&
+   verlte 8.2.2 "$ghc_ver"
+then
+	PATH="$build_dir/bin:$PATH"
+	export PATH
+
+	cabal v2-install \
+	      --symlink-bindir="$build_dir/bin" \
+	      --constraint "network < 3" \
+	      --package-env=/dev/null \
+	      hpack || exit 1
+
+	stack_dir="$(mktemp --tmpdir -d "cabal-helper.stacksrcXXXXXXXXX")"
+
+	git clone \
+	    --depth=1 \
+	    --branch=stable \
+	    https://github.com/commercialhaskell/stack "$stack_dir"  || exit 1
+
+	(
+		cd "$stack_dir"
+		hpack
+		cabal v2-install \
+		      --symlink-bindir="$build_dir/bin" \
+		      --constraint "Cabal == 2.4.0.1" \
+		      --constraint "network < 3" . \
+		      --package-env=/dev/null || exit 1
+        ) || exit 1
+fi