ci: add luarocks upload release workflow (#435)

see nvim-telescope/telescope.nvim#2276 (comment).

Author: mrcjkb

.github/workflows/release.yml

@@ -0,0 +1,15 @@
+name: "release"
+on:
+  push:
+    tags:
+      - 'v*'
+jobs:
+  luarocks-upload:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: leafo/gh-actions-lua@v9
+      - uses: leafo/gh-actions-luarocks@v4
+      - name: Install dkjson
+        run: luarocks install dkjson
+      - name: Luarocks Upload
+        run: make luarocks_upload

Makefile

@@ -3,3 +3,6 @@ test:
 
 generate_filetypes:
 	nvim --headless -c 'luafile scripts/update_filetypes_from_github.lua' -c 'qa!'
+
+luarocks_upload:
+	bash ./scripts/luarocks-upload.sh

scripts/luarocks-upload.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+# Expects the LUAROCKS_API_KEY secret to be set
+
+TMP_DIR=$(mktemp -d)
+MODREV=$(git describe --tags --always --first-parent | tr -d "v")
+DEST_ROCKSPEC="$TMP_DIR/plenary.nvim-$MODREV-1.rockspec"
+cp "plenary.nvim-scm-1.rockspec" "$DEST_ROCKSPEC"
+sed -i "s/'scm'/'$MODREV'/g" "$DEST_ROCKSPEC"
+luarocks upload "$DEST_ROCKSPEC" --api-key="$LUAROCKS_API_KEY"