From 61d94d4f33db1f3c28938b30a6422b0a581e45d3 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Thu, 12 Jun 2025 15:18:12 +0200
Subject: [PATCH] ldd

---
 overlays.nix | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/overlays.nix b/overlays.nix
index 85e913c..edaeb67 100755
--- a/overlays.nix
+++ b/overlays.nix
@@ -259,6 +259,55 @@ let
     }
   );
 
+  # usage: nix-build ./dev.nix -A <package>.tests.checkLdd
+  overlays.withTestCheckLdd = mkDerivationOverlay (
+    final: prev: prevStdenv: finalAttrs: prevAttrs: {
+      passthru = prevAttrs.passthru or { } // {
+        tests = prevAttrs.tests or { } // {
+          checkLdd =
+            prev.runCommandLocal "${finalAttrs.finalPackage.name}-ldd"
+              {
+                nativeBuildInputs = [
+                  prev.fd
+                ];
+              }
+              ''
+                worker() (
+                    local output
+                    set +e
+                    output="$(ldd "$1")"
+                    if [[ $? -ne 0 ]] || grep <<<"$output" -q " not found"; then
+                        echo "$1"
+                        # TODO: show executable permission errors too
+                        grep <<<"$output" " not found"
+                        touch any_error
+                    fi
+                )
+                fd_args=(
+                    .
+                    ${
+                      lib.pipe finalAttrs.finalPackage.outputs [
+                        (map (output: finalAttrs.finalPackage.${output}))
+                        lib.escapeShellArgs
+                      ]
+                    }
+                    --type f
+                    --hidden
+                    --no-ignore
+                    --follow # symlinks
+                    -x bash -c "$(declare -f worker); worker \"\$@\""
+                )
+                fd "''${fd_args[@]}"
+
+                if [[ ! -e any_error ]]; then
+                  touch $out
+                fi
+              '';
+        };
+      };
+    }
+  );
+
   # TODO: this way of overriding does not work
   # Not a treewide enable, just for a single derivation
   # usage: nix-build . -A <package>.withCuda
@@ -566,6 +615,7 @@ in
   overlays.withUnpacked
   overlays.withTestMainProgram
   overlays.withShellCheck
+  overlays.withTestCheckLdd
   # overlays.withCudaOrRocm # WIP
   overlays.withCcache # WIP
   overlays.withTwostagePythonBuildPassthru