nim: invert nim1 to be a definition of nim2

pkgs/development/compilers/nim/default.nix

···
 # https://nim-lang.org/docs/nimc.html
 
 { lib, callPackage, buildPackages, stdenv, fetchurl, fetchgit, fetchFromGitHub
-, makeWrapper, openssl, pcre, readline, boehmgc, sqlite, Security, nim-unwrapped
-, nim-unwrapped-2, nim }:
+, makeWrapper, openssl, pcre, readline, boehmgc, sqlite, Security
+, nim-unwrapped-2, nim-unwrapped-1, nim }:
 
 let
   parseCpu = platform:
···
 
 in {
 
-  nim-unwrapped = stdenv.mkDerivation (finalAttrs: {
+  nim-unwrapped-2 = stdenv.mkDerivation (finalAttrs: {
     pname = "nim-unwrapped";
-    version = "1.6.14";
+    version = "2.0.0";
     strictDeps = true;
 
     src = fetchurl {
       url = "https://nim-lang.org/download/nim-${finalAttrs.version}.tar.xz";
-      hash = "sha256-0HDS8oriQA33/kpJ7OufRc1TmQaxB0gYVqCveo+oLck=";
+      hash = "sha256-vWEB2EADb7eOk6ad9s8/n9DCHNdUtpX/hKO0rdjtCvc=";
     };
 
     buildInputs = [ boehmgc openssl pcre readline sqlite ]
···
 
       ./extra-mangling.patch
       # Mangle store paths of modules to prevent runtime dependence.
-    ] ++ lib.optional (!stdenv.hostPlatform.isWindows) ./toLocation.patch;
+
+      ./openssl.patch
+      # dlopen is widely used by Python, Ruby, Perl, ... what you're really telling me here is that your OS is fundamentally broken. That might be news for you, but it isn't for me.
+    ];
 
     configurePhase = let
       bootstrapCompiler = stdenv.mkDerivation {
···
     };
   });
 
-  nim-unwrapped-2 = nim-unwrapped.overrideAttrs (finalAttrs: rec {
-    version = "2.0.0";
+  nim-unwrapped-1 = nim-unwrapped-2.overrideAttrs (finalAttrs: prevAttrs: {
+    version = "1.6.14";
     src = fetchurl {
-      url = "https://nim-lang.org/download/nim-${version}.tar.xz";
-      hash = "sha256-vWEB2EADb7eOk6ad9s8/n9DCHNdUtpX/hKO0rdjtCvc=";
+      url = "https://nim-lang.org/download/nim-${finalAttrs.version}.tar.xz";
+      hash = "sha256-0HDS8oriQA33/kpJ7OufRc1TmQaxB0gYVqCveo+oLck=";
     };
 
     patches = [
···
 
       ./extra-mangling.patch
       # Mangle store paths of modules to prevent runtime dependence.
-
-      ./openssl.patch
-      # dlopen is widely used by Python, Ruby, Perl, ... what you're really telling me here is that your OS is fundamentally broken. That might be news for you, but it isn't for me.
-    ];
+    ] ++ lib.optional (!stdenv.hostPlatform.isWindows) ./toLocation.patch;
   });
 
 } // (let
···
     };
 in {
 
-  nim = wrapNim {
-    nim' = buildPackages.nim-unwrapped;
-    patches = [ ./nim.cfg.patch ];
-  };
-
   nim2 = wrapNim {
     nim' = buildPackages.nim-unwrapped-2;
     patches = [ ./nim2.cfg.patch ];
+  };
+
+  nim1 = wrapNim {
+    nim' = buildPackages.nim-unwrapped-1;
+    patches = [ ./nim.cfg.patch ];
   };
 
 })

pkgs/top-level/all-packages.nix

···
 
   inherit (callPackages ../development/compilers/nim
                         { inherit (darwin) Security;  }
-          ) nim-unwrapped nim-unwrapped-2 nim nim2;
-  nimPackages = recurseIntoAttrs nim.pkgs;
+          ) nim-unwrapped-1 nim-unwrapped-2 nim1 nim2;
+  nim = nim1;
+  nimPackages = recurseIntoAttrs nim1.pkgs;
   nim2Packages = recurseIntoAttrs nim2.pkgs;
 
   nrpl = callPackage ../development/tools/nrpl { };