comments

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2.4.0
+    - uses: actions/checkout@v2.3.4
     - run: yarn install --frozen-lockfile
     - run: yarn build
     - name: Install Nix
@@ -31,7 +31,7 @@ jobs:
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2.4.0
+    - uses: actions/checkout@v2.3.4
     - run: yarn install --frozen-lockfile
     - run: yarn build
     - name: Install Nix
@@ -47,7 +47,7 @@ jobs:
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2.4.0
+    - uses: actions/checkout@v2.3.4
     - run: yarn install --frozen-lockfile
     - run: yarn build
     - name: Install Nix
@@ -65,7 +65,7 @@ jobs:
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2.4.0
+    - uses: actions/checkout@v2.3.4
     - run: yarn install --frozen-lockfile
     - run: yarn build
     - name: Install Nix
@@ -74,6 +74,7 @@ jobs:
         install_url: https://nixos-nix-install-tests.cachix.org/serve/i6laym9jw3wg9mw6ncyrk6gjx4l34vvx/install
         install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'
         extra_nix_config: |
+          experimental-features = nix-command flakes
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
     - run: nix flake show github:NixOS/nixpkgs
 
@@ -83,7 +84,7 @@ jobs:
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2.4.0
+    - uses: actions/checkout@v2
     - run: yarn install --frozen-lockfile
     - run: yarn build
     - name: Install Nix
@@ -93,33 +94,3 @@ jobs:
         install_url: https://nixos-nix-install-tests.cachix.org/serve/i6laym9jw3wg9mw6ncyrk6gjx4l34vvx/install
         install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'
     - run: nix-build test.nix
-
-  oldest-supported-installer:
-    strategy:
-        matrix:
-          os: [ubuntu-latest, macos-latest]
-    runs-on: ${{ matrix.os }}
-    steps:
-    - uses: actions/checkout@v2.3.5
-    - run: yarn install --frozen-lockfile
-    - run: yarn build
-    - name: Install Nix
-      uses: ./
-      with:
-        nix_path: nixpkgs=channel:nixos-21.05
-        install_url: https://releases.nixos.org/nix/nix-2.3.5/install
-    - run: nix-build test.nix
-
-  act-support: 
-    strategy:
-        matrix:
-          os: [ubuntu-latest]
-    runs-on: ${{ matrix.os }}
-    steps:
-    - uses: actions/checkout@v2.4.0
-    - uses: actions/setup-go@v2.1.4
-      with:
-        go-version: '^1.16'
-    - run: go install github.com/nektos/act@master
-    - run: docker pull ghcr.io/catthehacker/ubuntu:js-20.04
-    - run: ~/go/bin/act -P ubuntu-latest=ghcr.io/catthehacker/ubuntu:js-20.04 push -j simple-build 

README.md

@@ -14,11 +14,10 @@ or [pin nixpkgs yourself](https://nix.dev/reference/pinning-nixpkgs.html)
 - Quick installation (~4s on Linux, ~20s on macOS)
 - Multi-User installation (with sandboxing enabled only on Linux)
 - [Self-hosted github runner](https://docs.github.com/en/actions/hosting-your-own-runners/about-self-hosted-runners) support
-- Allows specifying Nix installation URL via `install_url` (the oldest supported Nix version is 2.3.5)
+- Allows specifying Nix installation URL via `install_url`
 - Allows specifying extra Nix configration options via `extra_nix_config`
 - Allows specifying `$NIX_PATH` and channels via `nix_path`
 - Share `/nix/store` between builds using [cachix-action](https://github.com/cachix/cachix-action) for simple binary cache setup to speed up your builds and share binaries with your team
-- Enables `flakes` and `nix-command` experimental features by default (to disable, set ``experimental-features` via `extra_nix_config`) 
 
 ## Usage
 
@@ -33,8 +32,8 @@ jobs:
   tests:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2.4.0
-    - uses: cachix/install-nix-action@v15
+    - uses: actions/checkout@v2.3.4
+    - uses: cachix/install-nix-action@v13
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - run: nix-build
@@ -52,10 +51,13 @@ jobs:
   tests:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2.4.0
-    - uses: cachix/install-nix-action@v15
+    - uses: actions/checkout@v2.3.4
+    - uses: cachix/install-nix-action@v14
       with:
+        install_url: https://nixos-nix-install-tests.cachix.org/serve/vij683ly7sl95nnhb67bdjjfabclr85m/install
+        install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'
         extra_nix_config: |
+          experimental-features = nix-command flakes
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
     - run: nix build
     - run: nix flake check

__tests__/main.test.ts

@@ -0,0 +1,4 @@
+test('nothing', async() => {
+});
+
+// TODO: hopefully github actions will support integration tests

jest.config.js

@@ -0,0 +1,11 @@
+module.exports = {
+  clearMocks: true,
+  moduleFileExtensions: ['js', 'ts'],
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.ts'],
+  testRunner: 'jest-circus/runner',
+  transform: {
+    '^.+\\.ts$': 'ts-jest'
+  },
+  verbose: true
+}

lib/install-nix.sh

@@ -1,18 +1,17 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+# Set paths early (ephemeral self-hosted runners might reuse a runner)
+PATH="/nix/var/nix/profiles/per-user/$USER/profile/bin":"/nix/var/nix/profiles/default/bin":$PATH
+
 if type -p nix &>/dev/null ; then
   echo "Aborting: Nix is already installed at $(type -p nix)"
   exit
 fi
 
-# Create a temporary workdir
-workdir=$(mktemp -d)
-trap 'rm -rf "$workdir"' EXIT
-
 # Configure Nix
 add_config() {
-  echo "$1" | tee -a "$workdir/nix.conf" >/dev/null
+  echo "$1" | tee -a /tmp/nix.conf >/dev/null
 }
 # Set jobs to number of cores
 add_config "max-jobs = auto"
@@ -22,51 +21,34 @@ add_config "trusted-users = root $USER"
 if [[ $INPUT_EXTRA_NIX_CONFIG != "" ]]; then
   add_config "$INPUT_EXTRA_NIX_CONFIG"
 fi
-if [[ ! $INPUT_EXTRA_NIX_CONFIG =~ "experimental-features" ]]; then
-  add_config "experimental-features = nix-command flakes"
-fi
 
 # Nix installer flags
 installer_options=(
   --no-channel-add
   --darwin-use-unencrypted-nix-store-volume
-  --nix-extra-conf-file "$workdir/nix.conf"
+  --nix-extra-conf-file /tmp/nix.conf
 )
 
 # only use the nix-daemon settings if on darwin (which get ignored) or systemd is supported
 if [[ $OSTYPE =~ darwin || -e /run/systemd/system ]]; then
   installer_options+=(
     --daemon
-    --daemon-user-count "$(python -c 'import multiprocessing as mp; print(mp.cpu_count() * 2)')"
+    --daemon-user-count `python -c 'import multiprocessing as mp; print(mp.cpu_count() * 2)'`
   )
 else
   # "fix" the following error when running nix*
   # error: the group 'nixbld' specified in 'build-users-group' does not exist
-  add_config "build-users-group ="
   mkdir -m 0755 /etc/nix
-  cp $workdir/nix.conf /etc/nix/nix.conf
+  echo "build-users-group =" > /etc/nix/nix.conf
 fi
 
 if [[ $INPUT_INSTALL_OPTIONS != "" ]]; then
-  IFS=' ' read -r -a extra_installer_options <<< "$INPUT_INSTALL_OPTIONS"
+  IFS=' ' read -r -a extra_installer_options <<< $INPUT_INSTALL_OPTIONS
   installer_options=("${extra_installer_options[@]}" "${installer_options[@]}")
 fi
 
-echo "installer options: ${installer_options[*]}"
-
-# There is --retry-on-errors, but only newer curl versions support that
-curl_retries=5
-while ! curl -o "$workdir/install" -v --fail -L "${INPUT_INSTALL_URL:-https://nixos.org/nix/install}"
-do
-  sleep 1
-  ((curl_retries--))
-  if [[ $curl_retries -le 0 ]]; then
-    echo "curl retries failed" >&2
-    exit 1
-  fi
-done
-
-sh "$workdir/install" "${installer_options[@]}"
+echo "installer options: ${installer_options[@]}"
+sh <(curl --retry 5 --retry-connrefused -L "${INPUT_INSTALL_URL:-https://nixos.org/nix/install}") "${installer_options[@]}"
 
 if [[ $OSTYPE =~ darwin ]]; then
   # macOS needs certificates hints
@@ -80,6 +62,7 @@ fi
 echo "/nix/var/nix/profiles/per-user/$USER/profile/bin" >> "$GITHUB_PATH"
 echo "/nix/var/nix/profiles/default/bin" >> "$GITHUB_PATH"
 
+
 if [[ $INPUT_NIX_PATH != "" ]]; then
   echo "NIX_PATH=${INPUT_NIX_PATH}" >> "$GITHUB_ENV"
 fi