test with new release

.github/workflows/test.yml

@@ -6,14 +6,16 @@ jobs:
   tests:
     strategy:
       matrix:
-        os: [ubuntu-18.04, macos-latest]
+        os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
     - run: yarn install --frozen-lockfile
     - run: yarn build
     - name: Install Nix
       uses: ./
+      with: 
+        install_url: https://static.domenkozar.com/install-2.3.5-pre
     - run: nix-env -iA cachix -f https://github.com/NixOS/nixpkgs/tarball/ab5863afada3c1b50fc43bf774b75ea71b287cde
     - run: cat /etc/nix/nix.conf
     # cachix should be available and be able to configure a cache

lib/install-nix.sh

@@ -3,15 +3,6 @@ set -euo pipefail
 
 export here=$(dirname "${BASH_SOURCE[0]}")
 
-nixConf() {
-  sudo mkdir -p /etc/nix
-  # Workaround a segfault: https://github.com/NixOS/nix/issues/2733
-  sudo sh -c 'echo http2 = false >> /etc/nix/nix.conf'
-  # Set jobs to number of cores
-  sudo sh -c 'echo max-jobs = auto >> /etc/nix/nix.conf'
-  # Allow binary caches for runner user
-  sudo sh -c 'echo trusted-users = root runner >> /etc/nix/nix.conf'
-}
 
 if [[ $OSTYPE =~ darwin ]]; then
   # Catalina workaround https://github.com/NixOS/nix/issues/2925
@@ -21,15 +12,13 @@ if [[ $OSTYPE =~ darwin ]]; then
   sudo mdutil -i off /nix
 fi
 
-nixConf
+# Set jobs to number of cores
+sudo sh -c 'echo max-jobs = auto >> /tmp/nix.conf'
+# Allow binary caches for runner user
+sudo sh -c 'echo trusted-users = root runner >> /tmp/nix.conf'
 
-# Needed due to multi-user being too defensive
-export ALLOW_PREEXISTING_INSTALLATION=1
 
-sh <(curl -L ${INPUT_INSTALL_URL:-https://nixos.org/nix/install}) --daemon
-
-# write nix.conf again as installation overwrites it
-nixConf
+sh <(curl -L ${INPUT_INSTALL_URL:-https://nixos.org/nix/install}) --daemon --daemon-user-count 4 --nix-extra-conf-file /tmp/nix.conf
 
 # macOS needs certificates hints
 if [[ $OSTYPE =~ darwin ]]; then
@@ -39,9 +28,6 @@ if [[ $OSTYPE =~ darwin ]]; then
   sudo launchctl setenv NIX_SSL_CERT_FILE "$cert_file"
 fi
 
-# Reload the daemon to pick up changes
-sudo pkill -HUP nix-daemon
-
 # Set paths
 echo "::add-path::/nix/var/nix/profiles/per-user/runner/profile/bin"
 echo "::add-path::/nix/var/nix/profiles/default/bin"