try out catalina fix

fix #5: set max-jobs = auto

.github/workflows/test.yml

@@ -1,4 +1,4 @@
-name: "nix-action test"
+name: "install-nix-action test"
 on:
   pull_request:
   push:
@@ -6,13 +6,15 @@ jobs:
   tests:
     strategy:
       matrix:
-        os: [ubuntu-18.04, macos]
+        os: [ubuntu-18.04, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v1
     - run: yarn install --frozen-lockfile
     - run: yarn build
+    # TODO: just commit it using github
+    - run: git diff --exit-code
     - run: yarn test
     - name: Install Nix
       uses: ./
-    - run: nix-build test.nix
+    - run: nix-build test.nix

README.md

@@ -1,8 +1,8 @@
-# nix-action
+# install-nix-action
 
-![github actions badge](https://github.com/cachix/nix-action/workflows/nix-action%20test/badge.svg)
+![github actions badge](https://github.com/cachix/install-nix-action/workflows/install-nix-action%20test/badge.svg)
 
-Installs [Nix](https://nixos.org/nix/) in platform agnostic way (supports: Linux/macOS).
+Installs [Nix](https://nixos.org/nix/) on GitHub Actions for the supported platforms: Linux and macOS.
 
 ## Usage
 
@@ -18,18 +18,22 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v1
-    - uses: cachix/nix-action@v1
+    - uses: cachix/install-nix-action@v3
     - run: nix-build
 ```
 
+
+See [action.yml](action.yml) for all options.
+
 See also [cachix-action](https://github.com/cachix/cachix-action) for
-simple binary cache setup.
+simple binary cache setup to speed up your builds and share binaries
+with developers.
 
 ---
 
 ## Hacking
 
-Install the dependencies  
+Install the dependencies
 ```bash
 $ yarn install
 ```
@@ -39,7 +43,7 @@ Build the typescript
 $ yarn build
 ```
 
-Run the tests :heavy_check_mark:  
+Run the tests :heavy_check_mark:
 ```bash
 $ yarn test
 ```

action.yml

@@ -1,5 +1,5 @@
-name: 'Nix'
-description: 'Install Nix'
+name: 'Install Nix'
+description: 'Installs Nix on GitHub Actions for the supported platforms: Linux and macOS.'
 author: 'Domen Kožar'
 branding:
   color: 'blue'

lib/README.md

@@ -0,0 +1,5 @@
+
+# Generated Code
+
+The files in this directory are generated.
+See [src](../src)

lib/main.js

@@ -24,11 +24,23 @@ const fs_1 = require("fs");
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
-            // rest of the constants
             const home = os_1.homedir();
             const { username } = os_1.userInfo();
             const PATH = process.env.PATH;
+            const INSTALL_PATH = '/opt/nix';
             const CERTS_PATH = home + '/.nix-profile/etc/ssl/certs/ca-bundle.crt';
+            // Workaround a segfault: https://github.com/NixOS/nix/issues/2733
+            yield exec.exec("sudo", ["mkdir", "-p", "/etc/nix"]);
+            yield exec.exec("sudo", ["sh", "-c", "echo http2 = false >> /etc/nix/nix.conf"]);
+            // Set jobs to number of cores
+            yield exec.exec("sudo", ["sh", "-c", "echo max-jobs = auto >> /etc/nix/nix.conf"]);
+            // Catalina workaround https://github.com/NixOS/nix/issues/2925
+            if (os_1.type() == "Darwin") {
+                yield exec.exec("sudo", ["sh", "-c", `echo \"nix\t${INSTALL_PATH}\"  >> /etc/synthetic.conf`]);
+                yield exec.exec("sudo", ["sh", "-c", `mkdir -m 0755 ${INSTALL_PATH} && chown runner ${INSTALL_PATH}`]);
+                yield exec.exec("/System/Library/Filesystems/apfs.fs/Contents/Resources/apfs.util", ["-B"]);
+                core.exportVariable('NIX_IGNORE_SYMLINK_STORE', "1");
+            }
             // TODO: retry due to all the things that go wrong
             const nixInstall = yield tc.downloadTool('https://nixos.org/nix/install');
             yield exec.exec("sh", [nixInstall]);

package.json

@@ -1,8 +1,8 @@
 {
-  "name": "nix-action",
+  "name": "install-nix-action",
   "version": "1.0.0",
   "private": true,
-  "description": "nix-build with the help of caching to Cachix",
+  "description": "Installs Nix on GitHub Actions for the supported platforms: Linux and macOS.",
   "main": "lib/main.js",
   "scripts": {
     "build": "tsc",
@@ -10,7 +10,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/cachix/nix-action.git"
+    "url": "git+https://github.com/cachix/install-nix-action.git"
   },
   "keywords": [
     "actions",

shell.nix

@@ -0,0 +1,8 @@
+{ pkgs ? import <nixpkgs> {}
+}:
+
+pkgs.mkShell {
+  name = "install-nix-action-shell";
+
+  buildInputs = [ pkgs.yarn ];
+}

src/main.ts

@@ -1,7 +1,7 @@
 import * as core from '@actions/core';
 import * as exec from '@actions/exec';
 import * as tc from '@actions/tool-cache';
-import {homedir, userInfo} from 'os';
+import {homedir, userInfo, type} from 'os';
 import {existsSync} from 'fs';
 
 async function run() {
@@ -9,11 +9,23 @@ async function run() {
     const home = homedir();
     const {username} = userInfo();
     const PATH = process.env.PATH;  
+    const INSTALL_PATH = '/opt/nix';
     const CERTS_PATH = home + '/.nix-profile/etc/ssl/certs/ca-bundle.crt';
 
     // Workaround a segfault: https://github.com/NixOS/nix/issues/2733
     await exec.exec("sudo", ["mkdir", "-p", "/etc/nix"]);
-    await exec.exec("sudo", ["echo", "http2 = false", ">>", "/etc/nix/nix.conf"]);
+    await exec.exec("sudo", ["sh", "-c", "echo http2 = false >> /etc/nix/nix.conf"]);
+
+    // Set jobs to number of cores
+    await exec.exec("sudo", ["sh", "-c", "echo max-jobs = auto >> /etc/nix/nix.conf"]);
+
+    // Catalina workaround https://github.com/NixOS/nix/issues/2925
+    if (type() == "Darwin") {
+      await exec.exec("sudo", ["sh", "-c", `echo \"nix\t${INSTALL_PATH}\"  >> /etc/synthetic.conf`]);
+      await exec.exec("sudo", ["sh", "-c", `mkdir -m 0755 ${INSTALL_PATH} && chown runner ${INSTALL_PATH}`]);
+      await exec.exec("/System/Library/Filesystems/apfs.fs/Contents/Resources/apfs.util", ["-B"]);
+      core.exportVariable('NIX_IGNORE_SYMLINK_STORE', "1");  
+    }
 
     // TODO: retry due to all the things that go wrong
     const nixInstall = await tc.downloadTool('https://nixos.org/nix/install');