1 files changed, 37 insertions, 0 deletions
diff --git a/pkgs/development/tools/build-managers/scala-cli/update.nix b/pkgs/development/tools/build-managers/scala-cli/update.nix
new file mode 100644
index 00000000000..fd79a1cf3a8
--- /dev/null
+++ b/pkgs/development/tools/build-managers/scala-cli/update.nix
@@ -0,0 +1,37 @@
+{ lib, curl, writeShellScript, jq, gnused, git, nix, coreutils }: { platforms, pname, version }:
+
+writeShellScript "${pname}-update-script" ''
+  set -o errexit
+  PATH=${lib.makeBinPath [ curl jq gnused git nix coreutils ]}
+
+  latest_version=$(curl -s "https://api.github.com/repos/VirtusLab/scala-cli/releases?per_page=1" | jq ".[0].tag_name" --raw-output | sed 's/^v//')
+
+  if [[ "${version}" = "$latest_version" ]]; then
+      echo "The new version same as the old version."
+      exit 0
+  fi
+
+  nixpkgs=$(git rev-parse --show-toplevel)
+  sources_json="$nixpkgs/pkgs/development/tools/build-managers/scala-cli/sources.json"
+
+  platform_assets=()
+
+  for platform in ${lib.concatStringsSep " " platforms}; do
+    asset=$(jq ".assets.\"$platform\".asset" --raw-output < $sources_json)
+    release_asset_url="https://github.com/Virtuslab/scala-cli/releases/download/v$latest_version/$asset"
+
+    asset_hash=$(nix-prefetch-url "$release_asset_url")
+
+    asset_object=$(jq --compact-output --null-input \
+      --arg asset "$asset" \
+      --arg sha256 "$asset_hash" \
+      --arg platform "$platform" \
+      '{asset: $asset, sha256: $sha256, platform: $platform}')
+    platform_assets+=($asset_object)
+  done
+
+  printf '%s\n' "''${platform_assets[@]}" | \
+    jq -s "map ( { (.platform): . | del(.platform) }) | add" | \
+    jq --arg version $latest_version \
+      '{ version: $version, assets: . }' > $sources_json
+''