From 97a1be3c09645647090b7f312d24568f1b5ef1ef Mon Sep 17 00:00:00 2001
From: Sander <hey@sandydoo.me>
Date: Fri, 3 Nov 2023 13:12:31 +0000
Subject: [PATCH] fix: don't use the default GitHub token for Enterprise

The token on Enterprise instances is not valid for github.com.

Resolves #196.
---
 install-nix.sh | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/install-nix.sh b/install-nix.sh
index d0e094a..7e3a979 100755
--- a/install-nix.sh
+++ b/install-nix.sh
@@ -25,11 +25,18 @@ if [[ $OSTYPE =~ darwin ]]; then
 fi
 # Allow binary caches for user
 add_config "trusted-users = root ${USER:-}"
-# Add github access token
+# Add a GitHub access token.
+# Token-less access is subject to lower rate limits.
 if [[ -n "${INPUT_GITHUB_ACCESS_TOKEN:-}" ]]; then
+  echo "::debug::Using the provided github_access_token for github.com"
   add_config "access-tokens = github.com=$INPUT_GITHUB_ACCESS_TOKEN"
-elif [[ -n "${GITHUB_TOKEN:-}" ]]; then
+# Use the default GitHub token if available.
+# Skip this step if running an Enterprise instance. The default token there does not work for github.com.
+elif [[ -n "${GITHUB_TOKEN:-}" && $GITHUB_SERVER_URL == "https://github.com" ]]; then
+  echo "::debug::Using the default GITHUB_TOKEN for github.com"
   add_config "access-tokens = github.com=$GITHUB_TOKEN"
+else
+  echo "::debug::Continuing without a GitHub access token"
 fi
 # Append extra nix configuration if provided
 if [[ -n "${INPUT_EXTRA_NIX_CONFIG:-}" ]]; then