python3,python2: partially apply hasSuffix

pkgs/development/interpreters/python/mk-python-derivation.nix

@@ -59,6 +59,8 @@ let
     in
     fixedWidthString len " " name;
 
+  hasZipSuffix = hasSuffix "zip";
+
   isPythonModule =
     drv:
     # all pythonModules have the pythonModule attribute
@@ -317,7 +319,7 @@ lib.extendMkDerivation {
       ++ optionals removeBinBytecode [
         pythonRemoveBinBytecodeHook
       ]
-      ++ optionals (hasSuffix "zip" (finalAttrs.src.name or "")) [
+      ++ optionals (attrs ? src.name && hasZipSuffix attrs.src.name) [
         unzip
       ]
       ++ optionals (format' == "setuptools") [

pkgs/development/misc/resholve/python2/mk-python-derivation.nix

@@ -27,6 +27,9 @@
   eggBuildHook,
   eggInstallHook,
 }:
+let
+  hasZipSuffix = lib.hasSuffix "zip";
+in
 lib.extendMkDerivation {
   constructDrv = stdenv.mkDerivation;
 
@@ -207,7 +210,7 @@ lib.extendMkDerivation {
       ++ lib.optionals removeBinBytecode [
         pythonRemoveBinBytecodeHook
       ]
-      ++ lib.optionals (lib.hasSuffix "zip" (attrs.src.name or "")) [
+      ++ lib.optionals (attrs ? src.name && hasZipSuffix attrs.src.name) [
         unzip
       ]
       ++ lib.optionals (format == "setuptools") [