test macos-13

Based on the content of files already in the repo.

.editorconfig

@@ -0,0 +1,15 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+
+[LICENSE]
+indent_size = unset

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
   simple-build:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, macos-13]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3

install-nix.sh

@@ -19,6 +19,9 @@ add_config() {
 }
 # Set jobs to number of cores
 add_config "max-jobs = auto"
+if [[ $OSTYPE =~ darwin ]]; then
+  add_config "ssl-cert-file = /etc/ssl/cert.pem"
+fi
 # Allow binary caches for user
 add_config "trusted-users = root ${USER:-}"
 # Add github access token
@@ -32,7 +35,7 @@ if [[ -n "${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 auto-allocate-uids"
+  add_config "experimental-features = nix-command flakes"
 fi
 
 # Nix installer flags
@@ -46,9 +49,8 @@ installer_options=(
 if [[ (! $INPUT_INSTALL_OPTIONS =~ "--no-daemon") && ($OSTYPE =~ darwin || -e /run/systemd/system) ]]; then
   installer_options+=(
     --daemon
-    --daemon-user-count 1
+    --daemon-user-count "$(python3 -c 'import multiprocessing as mp; print(mp.cpu_count() * 2)')"
   )
-  add_config "auto-allocate-uids = true"
 else
   # "fix" the following error when running nix*
   # error: the group 'nixbld' specified in 'build-users-group' does not exist
@@ -67,7 +69,7 @@ echo "installer options: ${installer_options[*]}"
 
 # There is --retry-on-errors, but only newer curl versions support that
 curl_retries=5
-while ! curl -sS -o "$workdir/install" -v --fail -L "${INPUT_INSTALL_URL:-https://releases.nixos.org/nix/nix-2.15.1/install}"
+while ! curl -sS -o "$workdir/install" -v --fail -L "${INPUT_INSTALL_URL:-https://releases.nixos.org/nix/nix-2.16.1/install}"
 do
   sleep 1
   ((curl_retries--))
@@ -79,14 +81,6 @@ done
 
 sh "$workdir/install" "${installer_options[@]}"
 
-if [[ $OSTYPE =~ darwin ]]; then
-  # macOS needs certificates hints
-  cert_file=/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt
-  echo "NIX_SSL_CERT_FILE=$cert_file" >> "$GITHUB_ENV"
-  export NIX_SSL_CERT_FILE=$cert_file
-  sudo launchctl setenv NIX_SSL_CERT_FILE "$cert_file"
-fi
-
 # Set paths
 echo "/nix/var/nix/profiles/default/bin" >> "$GITHUB_PATH"
 # new path for nix 2.14