Initial commit

src/main.ts

@@ -0,0 +1,43 @@
+import * as core from '@actions/core';
+import * as exec from '@actions/exec';
+import {homedir} from 'os';
+import {extrasperse} from './utils';
+
+async function run() {
+  try {
+    const file = core.getInput('file');
+    const attributes = core.getInput('attributes');
+    const cachixPush = core.getInput('cachixPush', { required: true });
+
+    // required for macos
+    core.exportVariable('NIX_SSL_CERT_FILE', '/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt');
+
+    console.log(`Installing Cachix ...`);
+    await exec.exec(homedir() + '/.nix-profile/bin/nix-env', ['-iA', 'cachix', '-f', 'https://cachix.org/api/v1/install']);
+
+    // TODO: cachix use --watch-store
+
+    console.log(`Setting up cache ` + cachixPush + `...`);
+    await exec.exec(homedir() + '/.nix-profile/bin/cachix', ['use', cachixPush]);
+
+    console.log(`Invoking nix-build...`);
+    let paths = '';
+    const options = {
+      listeners: {
+        stdout: (data: Buffer) => {
+          paths += data.toString();
+        },
+      }
+    };
+    const args = ['-f', file || "default.nix"].concat(extrasperse('-A', attributes.split(/\s/)));
+    await exec.exec(homedir() + '/.nix-profile/bin/nix-build', args, options);
+
+    console.log(`Pushing to cache ` + cachixPush + `...`);
+    await exec.exec(homedir() + '/.nix-profile/bin/cachix', ['push', cachixPush].concat(paths.split(/\s/).join(' ')));
+  } catch (error) {
+    core.setFailed(`Action faield with error: ${error}`);
+    throw(error);
+  } 
+}
+
+run();

src/utils.ts

@@ -0,0 +1,5 @@
+export function extrasperse (elem: string, array: string[]) {
+    const init: string[] = [];
+    return array.reduce((r, a) => r.concat(elem, a), init)
+  };
+