First working version.

Author: xpol

.github/workflows/publish.yml

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+name: publish
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        luaVersion: ["5.1.5", "5.2.4", "5.3.5", "luajit-2.0.5", "luajit-2.1.0-beta3"]
+        os: [ubuntu-latest, macOs-latest, windows-latest]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@master
+    - uses: xpol/setup-lua@master
+      with:
+        luaVersion: ${{ matrix.luaVersion }}
+
+    - name: bundle binaries
+      run: tar czf '${{matrix.luaVersion}}.tar.gz' .lua
+
+    - name: upload to release
+      uses: svenstaro/upload-release-action@v1-release
+      with:
+        repo_token: ${{ secrets.GITHUB_TOKEN }}
+        file: ${{ matrix.luaVersion }}.tar.gz
+        asset_name: ${{ matrix.luaVersion }}.tar.gz
+        tag: ${{ github.ref }}
+        overwrite: true

.github/workflows/test.yml

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+name: test
+
+on: [push]
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        luaVersion: ["5.1.5", "5.2.4", "5.3.5"]
+        os: [macOs-latest, ubuntu-latest, windows-latest]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@master
+    - uses: ./
+      with:
+        luaVersion: ${{ matrix.luaVersion }}
+
+    - name: test lua
+      run: |
+        which lua
+        lua -e "print(_VERSION)"

.gitignore

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+!node_modules

Makefile

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+
+vendor::
+	-rm -r node_modules
+	yarn install --production

README.md

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-# setup-lua
-GitHub action to setup Lua.
+# xpol/setup-lua
+
+[![Actions Status](https://github.com/xpol/setup-lua/workflows/test/badge.svg)](https://github.com/xpol/setup-lua/actions)
+
+Github Action to install Lua/LuaJIT on Unbutu/macOS/Windows.
+
+Builds and installs Lua into the `.lua/` directory in the working directory using [CMake](https://cmake.org/).
+Adds the `.lua/bin` to the `PATH` environment variable so `lua` can be called
+directly in workflows.
+
+This project is hightlly inspired by (and this README is initially copied from) [leafo/gh-actions-lua](https://github.com/leafo/gh-actions-lua). The difference is this project use CMake to support Unbutu/macOS/Windows.
+
+Many thanks to [leafo](https://github.com/leafo)!
+
+## Usage
+
+Install Lua:
+
+*Will install the latest stable release of PUC-Rio Lua.*
+
+```yaml
+- uses: xpol/setup-lua@v1
+```
+
+Install specific version of Lua:
+
+```yaml
+- uses: xpol/setup-lua@v1
+  with:
+    luaVersion: "5.1.5"
+```
+
+Install specific version of LuaJIT:
+
+```yaml
+- uses: xpol/setup-lua@v1
+  with:
+    luaVersion: "luajit-2.0.5"
+```
+
+## Inputs
+
+### `luaVersion`
+
+**Default**: `"5.3.5"`
+
+Specifies the version of Lua to install. The version name instructs the action
+where to download the source from.
+
+All supported of versions:
+
+* `"5.3.5"`
+* `"5.3.4"`
+* `"5.3.3"`
+* `"5.3.2"`
+* `"5.3.1"`
+* `"5.3.0"`
+* `"5.2.4"`
+* `"5.2.3"`
+* `"5.2.2"`
+* `"5.2.1"`
+* `"5.2.0"`
+* `"5.1.5"`
+* `"5.1.4"`
+* `"5.1.3"`
+* `"5.1.2"`
+* `"5.1.1"`
+* `"5.1.0"`
+* `"luajit-2.0.5"`
+* `"luajit-2.1.0-beta3"`
+* `"luajit-2.1.0-beta2"`
+* `"luajit-2.1.0-beta1"`
+* `"luajit-2.0.4"`
+* `"luajit-2.0.3"`
+* `"luajit-2.0.2"`
+* `"luajit-2.0.1"`
+* `"luajit-2.0.0"`
+
+*Note: Beta versions will removed when the stable version is released.*
+
+## Also want LuaRocks
+
+You may also need an action to install luarocks:
+
+* [`leafo/gh-actions-luarocks`](https://github.com/leafo/gh-actions-luarocks)
+  * inputs: `luarocksVersion`
+
+## Full Example
+
+This example is for running tests on a Lua module that uses LuaRocks for
+dependencies and [busted](https://olivinelabs.com/busted/) for a test suite.
+
+Create `.github/workflows/test.yml` in your repository:
+
+```yaml
+name: test
+
+on: [push]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@master
+
+    - uses: xpol/setup-lua@v1
+      with:
+        luaVersion: "5.1.5"
+
+    - uses: leafo/gh-actions-luarocks@v2
+
+    - name: build
+      run: |
+        luarocks install busted
+        luarocks make
+
+    - name: test
+      run: |
+        busted -o utfTerminal
+```
+
+This example:
+
+* Uses Lua 5.1.5 — You can use another version by chaning the `luaVersion` varible. LuaJIT versions can be used by prefixing the version with `luajit-`, i.e. `luajit-2.1.0-beta3`
+* Uses a `.rockspec` file the root directory of your repository to install dependencies and test packaging the module via `luarocks make`
+
+View the documentation for the individual actions (linked above) to learn more about how they work.
+
+### Version build matrix
+
+You can test against multiple versions of Lua using a matrix strategy:
+
+```yaml
+jobs:
+  test:
+    strategy:
+      matrix:
+        luaVersion: ["5.1.5", "5.2.4", "luajit-2.1.0-beta3"]
+
+    steps:
+    - uses: actions/checkout@master
+    - uses: xpol/setup-lua@v1
+      with:
+        luaVersion: ${{ matrix.luaVersion }}
+
+    # ...
+```

action.yml

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+
+name: "Setup Lua/LuaJIT"
+description: "Download, build, and install Lua or LuaJIT."
+
+branding:
+  icon: 'moon'
+  color: 'blue'
+
+inputs:
+  lua-version:
+    description: "The version of Lua to install. Supported versions: Lua >= 5.1.0, LuaJIT >= 2.0.0"
+    default: "5.3.5"
+
+runs:
+  using: 'node12'
+  main: 'main.js'