apptainer-overriden-nixos,singularity-overriden-nixos: init

pkgs/applications/virtualization/singularity/packages.nix

@@ -1,9 +1,9 @@
 { callPackage
 , fetchFromGitHub
+, nixos
 , conmon
 }:
-
-{
+let
   apptainer = callPackage
     (import ./generic.nix rec {
       pname = "apptainer";
@@ -67,4 +67,28 @@
     {
       defaultToSuid = true;
     };
+
+  genOverridenNixos = package: packageName: (nixos {
+    programs.singularity = {
+      enable = true;
+      inherit package;
+    };
+  }).config.programs.singularity.packageOverriden.overrideAttrs (oldAttrs: {
+    meta = oldAttrs.meta // {
+      description = "";
+      longDescription = ''
+        This package produces identical store derivations to `pkgs.${packageName}`
+        overriden and installed by the NixOS module `programs.singularity`
+        with default configuration.
+
+        This is for binary substitutes only. Use pkgs.${packageName} instead.
+      '';
+    };
+  });
+in
+{
+  inherit apptainer singularity;
+
+  apptainer-overriden-nixos = genOverridenNixos apptainer "apptainer";
+  singularity-overriden-nixos = genOverridenNixos singularity "singularity";
 }

pkgs/top-level/all-packages.nix

@@ -30198,7 +30198,10 @@ with pkgs;
 
   inherit (callPackage ../applications/virtualization/singularity/packages.nix { })
     apptainer
-    singularity;
+    singularity
+    apptainer-overriden-nixos
+    singularity-overriden-nixos
+    ;
 
   skate = callPackage ../applications/misc/skate { };