Add support for configuring a GitHub access token.

action.yml

@@ -19,9 +19,19 @@ inputs:
   nix_conf:
     required: false
     description: |
-      If set, this configuration is written to a new file which is then added to
-      the NIX_USER_CONF_FILES environment variable. You can also set that
-      variable yourself to control the Nix configuration.
+      If set, this configuration is written to XDG_CONFIG_HOME/nix/nix.conf,
+      which is read by Nix.
+      See https://nixos.org/manual/nix/stable/command-ref/conf-file.html for
+      information on what settings that are available. Make sure the settings
+      you define are supported by the Nix version you're using.
+
+  github_access_token:
+    required: false
+    description: |
+      Configure Nix to use the specified token when it is fetching private
+      sources from GitHub. If this setting is not specified,
+      nix-quick-install-action will use the content of the GITHUB_TOKEN
+      environment variable instead (if set).
 
   nix_on_tmpfs:
     required: true
@@ -51,6 +61,7 @@ runs:
         NIX_CONF: ${{ inputs.nix_conf }}
         NIX_ARCHIVES_URL: ${{ inputs.nix_archives_url }}
         NIX_ON_TMPFS: ${{ inputs.nix_on_tmpfs }}
+        GITHUB_ACCESS_TOKEN: ${{ inputs.github_access_token }}
 
 
 branding:

nix-quick-install.sh

@@ -60,12 +60,22 @@ fi
 rm -f "$archive"
 
 # Setup nix.conf
-if [ -n "$NIX_CONF" ]; then
-  NIX_CONF_FILE="${XDG_CONFIG_HOME:-$HOME/.config}/nix/nix.conf"
-  mkdir -p "$(dirname "$NIX_CONF_FILE")"
+NIX_CONF_FILE="${XDG_CONFIG_HOME:-$HOME/.config}/nix/nix.conf"
+mkdir -p "$(dirname "$NIX_CONF_FILE")"
+touch "$NIX_CONF_FILE"
+if [ -n "${NIX_CONF:-}" ]; then
   printenv NIX_CONF > "$NIX_CONF_FILE"
 fi
 
+# Setup GitHub access token
+if [[ -n "${GITHUB_ACCESS_TOKEN:-}" ]]; then
+  echo >>"$NIX_CONF_FILE" \
+    "access-tokens = github.com=$GITHUB_ACCESS_TOKEN"
+elif [[ -n "${GITHUB_TOKEN:-}" ]]; then
+  echo >>"$NIX_CONF_FILE" \
+    "access-tokens = github.com=$GITHUB_TOKEN"
+fi
+
 # Populate the nix db
 nix="$(readlink /nix/var/nix-quick-install-action/nix)"
 "$nix/bin/nix-store" --load-db < /nix/var/nix-quick-install-action/registration