cockpit: use bashInteractive instead of which (#407372)

pkgs/by-name/co/cockpit/package.nix

@@ -36,7 +36,6 @@
   systemd,
   udev,
   xmlto,
-  which,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -67,7 +66,6 @@ stdenv.mkDerivation (finalAttrs: {
     python3Packages.setuptools
     systemd
     xmlto
-    which
   ];
 
   buildInputs = [
@@ -81,6 +79,7 @@ stdenv.mkDerivation (finalAttrs: {
     udev
     python3Packages.pygobject3
     python3Packages.pip
+    bashInteractive
   ];
 
   postPatch = ''
@@ -99,7 +98,7 @@ stdenv.mkDerivation (finalAttrs: {
       --replace-fail 'const char *cockpit_config_dirs[] = { PACKAGE_SYSCONF_DIR' 'const char *cockpit_config_dirs[] = { "/etc"'
 
     substituteInPlace src/**/*.c \
-      --replace '"/bin/sh"' "\"$(which sh)\""
+      --replace-quiet "/bin/sh" "${lib.getExe bashInteractive}"
 
     # instruct users with problems to create a nixpkgs issue instead of nagging upstream directly
     substituteInPlace configure.ac \