From 0d5f9e66414c57c8ac5d77d34c348d3492b71add Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Fri, 31 Oct 2025 11:12:27 +0100
Subject: [PATCH] ci/eval: add extraNixpkgsConfig argument

---
 ci/eval/attrpaths.nix | 2 ++
 ci/eval/chunk.nix     | 2 ++
 ci/eval/default.nix   | 4 ++++
 ci/eval/outpaths.nix  | 6 +++++-
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/ci/eval/attrpaths.nix b/ci/eval/attrpaths.nix
index 6938e5dfe3cb..ff1bdabbb350 100644
--- a/ci/eval/attrpaths.nix
+++ b/ci/eval/attrpaths.nix
@@ -18,6 +18,7 @@
   lib ? import (path + "/lib"),
   trace ? false,
   path ? ./../..,
+  extraNixpkgsConfigJson ? "{}",
 }:
 let
 
@@ -46,6 +47,7 @@ let
 
   outpaths = import ./outpaths.nix {
     inherit path;
+    extraNixpkgsConfig = builtins.fromJSON extraNixpkgsConfigJson;
     attrNamesOnly = true;
   };
 
diff --git a/ci/eval/chunk.nix b/ci/eval/chunk.nix
index 43c684074602..e1759c2c6615 100644
--- a/ci/eval/chunk.nix
+++ b/ci/eval/chunk.nix
@@ -8,6 +8,7 @@
   myChunk,
   includeBroken,
   systems,
+  extraNixpkgsConfigJson,
 }:
 
 let
@@ -17,6 +18,7 @@ let
   unfiltered = import ./outpaths.nix {
     inherit path;
     inherit includeBroken systems;
+    extraNixpkgsConfig = builtins.fromJSON extraNixpkgsConfigJson;
   };
 
   # Turns the unfiltered recursive attribute set into one that is limited to myAttrpaths
diff --git a/ci/eval/default.nix b/ci/eval/default.nix
index 23a2d4cb4f72..a4eb839570a1 100644
--- a/ci/eval/default.nix
+++ b/ci/eval/default.nix
@@ -26,6 +26,8 @@
   quickTest ? false,
   # Don't try to eval packages marked as broken.
   includeBroken ? false,
+  # Customize the config used to evaluate nixpkgs
+  extraNixpkgsConfig ? { },
 }:
 
 let
@@ -75,6 +77,7 @@ let
             "$src/ci/eval/attrpaths.nix" \
             -A paths \
             -I "$src" \
+            --argstr extraNixpkgsConfigJson ${lib.escapeShellArg (builtins.toJSON extraNixpkgsConfig)} \
             --option restrict-eval true \
             --option allow-import-from-derivation false \
             --option eval-system "${evalSystem}" > $out/paths.json
@@ -120,6 +123,7 @@ let
           --arg attrpathFile "${attrpathFile}" \
           --arg systems "[ \"$system\" ]" \
           --arg includeBroken ${lib.boolToString includeBroken} \
+          --argstr extraNixpkgsConfigJson ${lib.escapeShellArg (builtins.toJSON extraNixpkgsConfig)} \
           -I ${nixpkgs} \
           -I ${attrpathFile} \
           > "$outputDir/result/$myChunk" \
diff --git a/ci/eval/outpaths.nix b/ci/eval/outpaths.nix
index 6d003dafc3c9..9abe08e1b165 100644
--- a/ci/eval/outpaths.nix
+++ b/ci/eval/outpaths.nix
@@ -11,6 +11,9 @@
 
   # Set this to `null` to build for builtins.currentSystem only
   systems ? builtins.fromJSON (builtins.readFile ../supportedSystems.json),
+
+  # Customize the config used to evaluate nixpkgs
+  extraNixpkgsConfig ? { },
 }:
 let
   lib = import (path + "/lib");
@@ -55,7 +58,8 @@ let
                 true;
 
             inHydra = true;
-          };
+          }
+          // extraNixpkgsConfig;
 
           __allowFileset = false;
         };