Provide library for other actions to use.

  * This allows other Github actions to import and use setup-haskell, see for instance [setup-agda](https://github.com/omelkonian/setup-agda/blob/master/src/setup-haskell.ts#L2).

  * Closes haskell#6.

setup/.eslintignore

@@ -1,4 +1,5 @@
 dist/
+lib/
 .out/
 __tests__/
 node_modules/

setup/.gitignore

@@ -1,4 +1,5 @@
 node_modules
 dist-newstyle
 .out
+**/tsbuildinfo
 .eslintcache

setup/.lintstagedrc.js

@@ -1,8 +1,8 @@
 module.exports = {
   'setup/!(*test).{js,ts,json}': [
     'eslint --cache --fix',
-    () => 'ncc build',
-    () => 'git add dist'
+    () => 'npm run bundle',
+    () => 'git add dist/ lib/'
   ],
   'setup/src/**/*.ts': () => 'tsc -p tsconfig.json',
   'setup/*.{js,ts,json,md}': 'prettier --write'

setup/__tests__/find-haskell.test.ts

@@ -1,6 +1,5 @@
 import {getOpts, getDefaults} from '../src/opts';
 import type {OS, Revisions, Tool} from '../src/opts';
-import {getInput} from '@actions/core';
 import * as supported_versions from '../src/versions.json';
 import * as rv from '../src/release-revisions.json';
 
@@ -17,12 +16,6 @@ const latestRevisions = (os: OS) => ({
   stack: release_revisions?.[os]?.stack?.[0]?.to
 });
 
-const mkName = (s: string): string =>
-  `INPUT_${s.replace(/ /g, '_').toUpperCase()}`;
-
-const setupEnv = (o: Record<string, unknown>): void =>
-  Object.entries(o).forEach(([k, v]) => v && (process.env[mkName(k)] = `${v}`));
-
 const forAllOS = (fn: (t: OS) => any) =>
   (['win32', 'darwin', 'linux'] as const).forEach(fn);
 
@@ -55,43 +48,34 @@ describe('haskell/actions/setup', () => {
       forAllTools(t => expect(def(os)[t].supported).toBe(supported_versions[t]))
     ));
 
-  it('[meta] Setup Env works', () => {
-    setupEnv({input: 'value'});
-    const i = getInput('input');
-    expect(i).toEqual('value');
-  });
-
   it('getOpts grabs defaults correctly from environment', () => {
-    setupEnv({});
     forAllOS(os => {
-      const options = getOpts(def(os), os);
+      const options = getOpts(def(os), os, {});
       forAllTools(t => expect(options[t].raw).toBe(def(os)[t].version));
     });
   });
 
   it('Versions resolve correctly', () => {
     const v = {ghc: '8.6.5', cabal: '2.4.1.0', stack: '2.1.3'};
-    setupEnv({
-      'enable-stack': 'true',
-      'stack-version': '2.1',
-      'ghc-version': '8.6',
-      'cabal-version': '2.4'
-    });
     forAllOS(os => {
-      const options = getOpts(def(os), os);
+      const options = getOpts(def(os), os, {
+        'enable-stack': 'true',
+        'stack-version': '2.1',
+        'ghc-version': '8.6',
+        'cabal-version': '2.4'
+      });
       forAllTools(t => expect(options[t].resolved).toBe(v[t]));
     });
   });
 
   it('"latest" Versions resolve correctly', () => {
-    setupEnv({
-      'enable-stack': 'true',
-      'stack-version': 'latest',
-      'ghc-version': 'latest',
-      'cabal-version': 'latest'
-    });
     forAllOS(os => {
-      const options = getOpts(def(os), os);
+      const options = getOpts(def(os), os, {
+        'enable-stack': 'true',
+        'stack-version': 'latest',
+        'ghc-version': 'latest',
+        'cabal-version': 'latest'
+      });
       forAllTools(t =>
         expect(options[t].resolved).toBe(
           latestRevisions(os)[t] ?? latestVersions[t]
@@ -101,9 +85,10 @@ describe('haskell/actions/setup', () => {
   });
 
   it('Enabling stack does not disable GHC or Cabal', () => {
-    setupEnv({'enable-stack': 'true'});
     forAllOS(os => {
-      const {ghc, cabal, stack} = getOpts(def(os), os);
+      const {ghc, cabal, stack} = getOpts(def(os), os, {
+        'enable-stack': 'true'
+      });
       expect({
         ghc: ghc.enable,
         stack: stack.enable,
@@ -113,9 +98,11 @@ describe('haskell/actions/setup', () => {
   });
 
   it('Enabling stack-no-global disables GHC and Cabal', () => {
-    setupEnv({'enable-stack': 'true', 'stack-no-global': 'true'});
     forAllOS(os => {
-      const {ghc, cabal, stack} = getOpts(def(os), os);
+      const {ghc, cabal, stack} = getOpts(def(os), os, {
+        'enable-stack': 'true',
+        'stack-no-global': 'true'
+      });
       expect({
         ghc: ghc.enable,
         cabal: cabal.enable,
@@ -125,12 +112,14 @@ describe('haskell/actions/setup', () => {
   });
 
   it('Enabling stack-no-global without setting enable-stack errors', () => {
-    setupEnv({'stack-no-global': 'true'});
-    forAllOS(os => expect(() => getOpts(def(os), os)).toThrow());
+    forAllOS(os =>
+      expect(() => getOpts(def(os), os, {'stack-no-global': 'true'})).toThrow()
+    );
   });
 
   it('Enabling stack-setup-ghc without setting enable-stack errors', () => {
-    setupEnv({'stack-setup-ghc': 'true'});
-    forAllOS(os => expect(() => getOpts(def(os), os)).toThrow());
+    forAllOS(os =>
+      expect(() => getOpts(def(os), os, {'stack-setup-ghc': 'true'})).toThrow()
+    );
   });
 });

setup/docs/contributors.md

@@ -4,6 +4,7 @@
 
 - Do checkin source (src)
 - Do checkin build output (dist)
+- Do checkin library build output (lib)
 
 ### Dependencies
 
@@ -16,7 +17,8 @@ git add abc.ext                             # Add the files you've changed. This
 git commit -m "Informative commit message"  # Commit. This will run Husky
 ```
 
-During the commit step, Husky will take care of formatting all files with [Prettier](https://github.com/prettier/prettier). It will also bundle the code into a single `dist/index.js` file.
+During the commit step, Husky will take care of formatting all files with [Prettier](https://github.com/prettier/prettier).
+It will also bundle the code into a single `dist/index.js` file and output the transpiled library under `lib/`.
 Finally, it will make sure these changes are appropriately included in your commit--no further work is needed.
 
 ## Versions