diff --git a/pkgs/development/compilers/nim/default.nix b/pkgs/development/compilers/nim/default.nix
index f0ffa4309f9f..19773ebe4999 100644
--- a/pkgs/development/compilers/nim/default.nix
+++ b/pkgs/development/compilers/nim/default.nix
@@ -2,8 +2,8 @@
 # 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:
@@ -74,14 +74,14 @@ let
 
 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 ]
@@ -96,7 +96,10 @@ in {
 
       ./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 {
@@ -157,11 +160,11 @@ in {
     };
   });
 
-  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 = [
@@ -173,10 +176,7 @@ in {
 
       ./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
@@ -312,14 +312,14 @@ in {
     };
 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 ];
+  };
+
 })
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0f6c1e645021..a5c35be35c14 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16806,8 +16806,9 @@ with pkgs;
 
   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 { };