From 81daafea8c7240b74073c467cc0baf80d08f22ee Mon Sep 17 00:00:00 2001
From: eveeifyeve <88671402+Eveeifyeve@users.noreply.github.com>
Date: Sat, 15 Nov 2025 10:16:28 +1100
Subject: [PATCH 1/6] nim: remove 1_0, 2_0 and 2_2 versions and aliases; nim:
 2.2.4 -> 2.2.10
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

writers/writeNim: migrate package to nim
nim: remove nativeStacktraces and gnuReadline args
nim: use pname instead

It's time that we remove nim1, nim1 has been a package for a while and
nim has moved on during that time to the v2 versions.
It's also time that nim had some attention in nixpkgs and upgrade the
nim 2 versions.

Also fixes an issue with nim-unwrapped missing the pname and version.
See #485742 for more info.

Co-authored-by: éclairevoyant
<848000+eclairevoyant@users.noreply.github.com>
---
 doc/release-notes/rl-2611.section.md          |  2 +
 pkgs/build-support/build-nim-package.nix      | 14 ++---
 pkgs/build-support/writers/scripts.nix        |  4 +-
 pkgs/by-name/ni/nim-1_0/nim.cfg.patch         | 31 -----------
 pkgs/by-name/ni/nim-1_0/package.nix           |  9 ----
 pkgs/by-name/ni/nim-2_0/package.nix           |  9 ----
 .../ni/nim-unwrapped-1_0/extra-mangling.patch | 52 -------------------
 pkgs/by-name/ni/nim-unwrapped-1_0/package.nix | 30 -----------
 .../ni/nim-unwrapped-1_0/toLocation.patch     | 16 ------
 pkgs/by-name/ni/nim-unwrapped-2_0/package.nix | 27 ----------
 .../nim-unwrapped-2_2/extra-mangling-2.patch  | 52 -------------------
 .../NIM_CONFIG_DIR.patch                      |  0
 .../ni/nim-unwrapped/extra-mangling.patch     | 17 ++++++
 .../nixbuild.patch                            |  0
 .../openssl.patch                             |  0
 .../package.nix                               | 10 ++--
 .../ni/{nim-2_2 => nim}/nim2.cfg.patch        |  0
 pkgs/by-name/ni/{nim-2_2 => nim}/package.nix  |  6 +--
 pkgs/top-level/aliases.nix                    | 10 ++++
 pkgs/top-level/all-packages.nix               |  7 ---
 20 files changed, 42 insertions(+), 254 deletions(-)
 delete mode 100644 pkgs/by-name/ni/nim-1_0/nim.cfg.patch
 delete mode 100644 pkgs/by-name/ni/nim-1_0/package.nix
 delete mode 100644 pkgs/by-name/ni/nim-2_0/package.nix
 delete mode 100644 pkgs/by-name/ni/nim-unwrapped-1_0/extra-mangling.patch
 delete mode 100644 pkgs/by-name/ni/nim-unwrapped-1_0/package.nix
 delete mode 100644 pkgs/by-name/ni/nim-unwrapped-1_0/toLocation.patch
 delete mode 100644 pkgs/by-name/ni/nim-unwrapped-2_0/package.nix
 delete mode 100644 pkgs/by-name/ni/nim-unwrapped-2_2/extra-mangling-2.patch
 rename pkgs/by-name/ni/{nim-unwrapped-2_2 => nim-unwrapped}/NIM_CONFIG_DIR.patch (100%)
 create mode 100644 pkgs/by-name/ni/nim-unwrapped/extra-mangling.patch
 rename pkgs/by-name/ni/{nim-unwrapped-2_2 => nim-unwrapped}/nixbuild.patch (100%)
 rename pkgs/by-name/ni/{nim-unwrapped-2_2 => nim-unwrapped}/openssl.patch (100%)
 rename pkgs/by-name/ni/{nim-unwrapped-2_2 => nim-unwrapped}/package.nix (91%)
 rename pkgs/by-name/ni/{nim-2_2 => nim}/nim2.cfg.patch (100%)
 rename pkgs/by-name/ni/{nim-2_2 => nim}/package.nix (96%)

diff --git a/doc/release-notes/rl-2611.section.md b/doc/release-notes/rl-2611.section.md
index 1d2ebf599f7d..936f58ebacf7 100644
--- a/doc/release-notes/rl-2611.section.md
+++ b/doc/release-notes/rl-2611.section.md
@@ -70,6 +70,8 @@
 - `rebuilderd` has been updated to 0.27.0 introducing breaking changes. See upstream changelog for details: [0.26.0](https://github.com/kpcyrd/rebuilderd/releases/tag/v0.26.0), [0.27.0](https://github.com/kpcyrd/rebuilderd/releases/tag/v0.27.0)
 
 - Starting with v14, `flameshot` will primarily utilise xdg-desktop-portal calls for screenshotting. This will directly affect users on X11 window managers due to the lack of a compatible portal with Screenshot feature. See [upstream changelog](https://github.com/flameshot-org/flameshot/releases/tag/v14.0.0) or [NixOS Flameshot](https://wiki.nixos.org/wiki/Flameshot) wiki page for workarounds.
+- `nim1` and respective aliases have been removed due to entering EOL; please migrate to `nim` or `nim-unwrapped` (nim 2).
+- `nim-2_0` & `nim-2_2` and respective aliases have been removed; please migrate to `nim` or `nim-unwrapped` (nim 2.2.10).
 
 ## Other Notable Changes {#sec-nixpkgs-release-26.11-notable-changes}
 
diff --git a/pkgs/build-support/build-nim-package.nix b/pkgs/build-support/build-nim-package.nix
index ade88ea9d3db..f5e093019935 100644
--- a/pkgs/build-support/build-nim-package.nix
+++ b/pkgs/build-support/build-nim-package.nix
@@ -3,8 +3,7 @@
   buildPackages,
   callPackage,
   stdenv,
-  nim1,
-  nim2,
+  nim,
   nim_builder,
   defaultNimVersion ? 2,
   nimOverrides,
@@ -38,7 +37,7 @@ let
       nim_builder --phase:install
       runHook postInstall
     '';
-    meta = { inherit (nim2.meta) maintainers platforms; };
+    meta = { inherit (nim.meta) maintainers platforms; };
   };
 
   fodFromLockEntry =
@@ -116,15 +115,10 @@ let
           ...
         }:
         (
-          if requiredNimVersion == 1 then
+          if requiredNimVersion == 2 then
             {
               depsBuildBuild = [ nim_builder ] ++ depsBuildBuild;
-              nativeBuildInputs = [ nim1 ] ++ nativeBuildInputs;
-            }
-          else if requiredNimVersion == 2 then
-            {
-              depsBuildBuild = [ nim_builder ] ++ depsBuildBuild;
-              nativeBuildInputs = [ nim2 ] ++ nativeBuildInputs;
+              nativeBuildInputs = [ nim ] ++ nativeBuildInputs;
             }
           else
             throw "requiredNimVersion ${toString requiredNimVersion} is not valid"
diff --git a/pkgs/build-support/writers/scripts.nix b/pkgs/build-support/writers/scripts.nix
index eabffa1117cb..9026c7ea42ca 100644
--- a/pkgs/build-support/writers/scripts.nix
+++ b/pkgs/build-support/writers/scripts.nix
@@ -799,7 +799,7 @@ rec {
     ## `pkgs.writers.writeNim` usage example
 
     ```nix
-      writeNim "hello-nim" { nim = pkgs.nim2; } ''
+      writeNim "hello-nim" { nim = pkgs.nim; } ''
         echo "hello nim"
       '';
     ```
@@ -809,7 +809,7 @@ rec {
     name:
     {
       makeWrapperArgs ? [ ],
-      nim ? pkgs.nim2,
+      nim ? pkgs.nim,
       nimCompileOptions ? { },
       strip ? true,
     }:
diff --git a/pkgs/by-name/ni/nim-1_0/nim.cfg.patch b/pkgs/by-name/ni/nim-1_0/nim.cfg.patch
deleted file mode 100644
index 7195132e52f6..000000000000
--- a/pkgs/by-name/ni/nim-1_0/nim.cfg.patch
+++ /dev/null
@@ -1,31 +0,0 @@
-diff --git a/config/nim.cfg b/config/nim.cfg
-index 3b964d124..850ed0ed9 100644
---- a/config/nim.cfg
-+++ b/config/nim.cfg
-@@ -8,26 +8,12 @@
- # Environment variables can be accessed like so:
- #  gcc.path %= "$CC_PATH"
- 
--cc = gcc
--
- # additional options always passed to the compiler:
- --parallel_build: "0" # 0 to auto-detect number of processors
- 
- hint[LineTooLong]=off
- #hint[XDeclaredButNotUsed]=off
- 
--# Examples of how to setup a cross-compiler:
--
--# Cross-compiling for Raspberry Pi.
--# (This compiler is available in gcc-arm-linux-gnueabihf package on Ubuntu)
--arm.linux.gcc.exe = "arm-linux-gnueabihf-gcc"
--arm.linux.gcc.linkerexe = "arm-linux-gnueabihf-gcc"
--
--# For OpenWRT, you will also need to adjust PATH to point to your toolchain.
--mips.linux.gcc.exe = "mips-openwrt-linux-gcc"
--mips.linux.gcc.linkerexe = "mips-openwrt-linux-gcc"
--
--
- path="$lib/deprecated/core"
- path="$lib/deprecated/pure"
- path="$lib/pure/collections"
diff --git a/pkgs/by-name/ni/nim-1_0/package.nix b/pkgs/by-name/ni/nim-1_0/package.nix
deleted file mode 100644
index 63df8623109e..000000000000
--- a/pkgs/by-name/ni/nim-1_0/package.nix
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  nim-unwrapped-1,
-  nim,
-}:
-
-nim.passthru.wrapNim {
-  nimUnwrapped = nim-unwrapped-1;
-  patches = [ ./nim.cfg.patch ];
-}
diff --git a/pkgs/by-name/ni/nim-2_0/package.nix b/pkgs/by-name/ni/nim-2_0/package.nix
deleted file mode 100644
index 841bd71ec3e9..000000000000
--- a/pkgs/by-name/ni/nim-2_0/package.nix
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  nim-unwrapped-2_0,
-  nim-2_2,
-}:
-
-nim-2_2.passthru.wrapNim {
-  nimUnwrapped = nim-unwrapped-2_0;
-  inherit (nim-2_2) patches;
-}
diff --git a/pkgs/by-name/ni/nim-unwrapped-1_0/extra-mangling.patch b/pkgs/by-name/ni/nim-unwrapped-1_0/extra-mangling.patch
deleted file mode 100644
index dc6bcebfaba1..000000000000
--- a/pkgs/by-name/ni/nim-unwrapped-1_0/extra-mangling.patch
+++ /dev/null
@@ -1,52 +0,0 @@
-diff --git a/compiler/modulepaths.nim b/compiler/modulepaths.nim
-index fa8fab08a..63b0cb44d 100644
---- a/compiler/modulepaths.nim
-+++ b/compiler/modulepaths.nim
-@@ -73,6 +73,17 @@ proc checkModuleName*(conf: ConfigRef; n: PNode; doLocalError=true): FileIndex =
-   else:
-     result = fileInfoIdx(conf, fullPath)
- 
-+proc rot13(result: var string) =
-+  # don't mangle .nim
-+  let finalIdx =
-+    if result.endsWith(".nim"): result.len - 4
-+    else: result.len
-+  for i, c in result[0..<finalIdx]:
-+    case c
-+    of 'a'..'m', 'A'..'M': result[i] = char(c.uint8 + 13)
-+    of 'n'..'z', 'N'..'Z': result[i] = char(c.uint8 - 13)
-+    else: discard
-+
- proc mangleModuleName*(conf: ConfigRef; path: AbsoluteFile): string =
-   ## Mangle a relative module path to avoid path and symbol collisions.
-   ##
-@@ -81,9 +92,11 @@ proc mangleModuleName*(conf: ConfigRef; path: AbsoluteFile): string =
-   ##
-   ## Example:
-   ## `foo-#head/../bar` becomes `@foo-@hhead@s..@sbar`
--  "@m" & relativeTo(path, conf.projectPath).string.multiReplace(
-+  result = "@m" & relativeTo(path, conf.projectPath).string.multiReplace(
-     {$os.DirSep: "@s", $os.AltSep: "@s", "#": "@h", "@": "@@", ":": "@c"})
-+  rot13(result)
- 
- proc demangleModuleName*(path: string): string =
-   ## Demangle a relative module path.
-   result = path.multiReplace({"@@": "@", "@h": "#", "@s": "/", "@m": "", "@c": ":"})
-+  rot13(result)
-diff --git a/compiler/msgs.nim b/compiler/msgs.nim
-index ae4bcfcb8..1ad7e5c08 100644
---- a/compiler/msgs.nim
-+++ b/compiler/msgs.nim
-@@ -661,8 +661,10 @@ proc uniqueModuleName*(conf: ConfigRef; fid: FileIndex): string =
-   for i in 0..<trunc:
-     let c = rel[i]
-     case c
--    of 'a'..'z':
--      result.add c
-+    of 'a'..'m':
-+      result.add char(c.uint8 + 13)
-+    of 'n'..'z':
-+      result.add char(c.uint8 - 13)
-     of {os.DirSep, os.AltSep}:
-       result.add 'Z' # because it looks a bit like '/'
-     of '.':
diff --git a/pkgs/by-name/ni/nim-unwrapped-1_0/package.nix b/pkgs/by-name/ni/nim-unwrapped-1_0/package.nix
deleted file mode 100644
index a210f22844c6..000000000000
--- a/pkgs/by-name/ni/nim-unwrapped-1_0/package.nix
+++ /dev/null
@@ -1,30 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  nim-unwrapped-2,
-}:
-
-nim-unwrapped-2.overrideAttrs (
-  finalAttrs: prevAttrs: {
-    version = "1.6.20";
-    src = fetchurl {
-      url = "https://nim-lang.org/download/nim-${finalAttrs.version}.tar.xz";
-      hash = "sha256-/+0EdQTR/K9hDw3Xzz4Ce+kaKSsMnFEWFQTC87mE/7k=";
-    };
-
-    patches =
-      builtins.filter (
-        p:
-        builtins.elem (baseNameOf p) [
-          "NIM_CONFIG_DIR.patch"
-          "nixbuild.patch"
-        ]
-      ) nim-unwrapped-2.patches
-      ++ [
-        ./extra-mangling.patch
-        # Mangle store paths of modules to prevent runtime dependence.
-      ]
-      ++ lib.optional (!stdenv.hostPlatform.isWindows) ./toLocation.patch;
-  }
-)
diff --git a/pkgs/by-name/ni/nim-unwrapped-1_0/toLocation.patch b/pkgs/by-name/ni/nim-unwrapped-1_0/toLocation.patch
deleted file mode 100644
index a3db46044049..000000000000
--- a/pkgs/by-name/ni/nim-unwrapped-1_0/toLocation.patch
+++ /dev/null
@@ -1,16 +0,0 @@
-diff --git a/lib/std/private/miscdollars.nim b/lib/std/private/miscdollars.nim
-index 840fedf54..6c3436308 100644
---- a/lib/std/private/miscdollars.nim
-+++ b/lib/std/private/miscdollars.nim
-@@ -6,9 +6,8 @@ template toLocation*(result: var string, file: string | cstring, line: int, col:
-   # it can be done in a single place.
-   result.add file
-   if line > 0:
--    result.add "("
-+    result.add ":"
-     addInt(result, line)
-     if col > 0:
--      result.add ", "
-+      result.add ":"
-       addInt(result, col)
--    result.add ")"
diff --git a/pkgs/by-name/ni/nim-unwrapped-2_0/package.nix b/pkgs/by-name/ni/nim-unwrapped-2_0/package.nix
deleted file mode 100644
index e459351c676d..000000000000
--- a/pkgs/by-name/ni/nim-unwrapped-2_0/package.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  lib,
-  fetchurl,
-  nim-unwrapped-1,
-  nim-unwrapped-2_2,
-}:
-
-nim-unwrapped-2_2.overrideAttrs (
-  finalAttrs: previousAttrs: {
-    version = "2.0.16";
-    src = fetchurl {
-      url = "https://nim-lang.org/download/nim-${finalAttrs.version}.tar.xz";
-      hash = "sha256-sucMbAEbVQcJMJCoiH+iUncyCP0EfuOPhWLiVp5cN4o=";
-    };
-    patches = lib.lists.unique (
-      builtins.filter (
-        p:
-        builtins.elem (baseNameOf p) [
-          "NIM_CONFIG_DIR.patch"
-          "nixbuild.patch"
-          "extra-mangling.patch"
-          "openssl.patch"
-        ]
-      ) (nim-unwrapped-1.patches ++ nim-unwrapped-2_2.patches)
-    );
-  }
-)
diff --git a/pkgs/by-name/ni/nim-unwrapped-2_2/extra-mangling-2.patch b/pkgs/by-name/ni/nim-unwrapped-2_2/extra-mangling-2.patch
deleted file mode 100644
index cf384c95d5f6..000000000000
--- a/pkgs/by-name/ni/nim-unwrapped-2_2/extra-mangling-2.patch
+++ /dev/null
@@ -1,52 +0,0 @@
-diff --git a/compiler/modulegraphs.nim b/compiler/modulegraphs.nim
-index 77762d23a..59dd8903a 100644
---- a/compiler/modulegraphs.nim
-+++ b/compiler/modulegraphs.nim
-@@ -503,7 +503,11 @@ proc uniqueModuleName*(conf: ConfigRef; m: PSym): string =
-   for i in 0..<trunc:
-     let c = rel[i]
-     case c
--    of 'a'..'z', '0'..'9':
-+    of 'a'..'m':
-+      result.add char(c.uint8 + 13)
-+    of 'n'..'z':
-+      result.add char(c.uint8 - 13)
-+    of '0'..'9':
-       result.add c
-     of {os.DirSep, os.AltSep}:
-       result.add 'Z' # because it looks a bit like '/'
-diff --git a/compiler/modulepaths.nim b/compiler/modulepaths.nim
-index c9e6060e5..2b349f27c 100644
---- a/compiler/modulepaths.nim
-+++ b/compiler/modulepaths.nim
-@@ -79,6 +79,17 @@ proc checkModuleName*(conf: ConfigRef; n: PNode; doLocalError=true): FileIndex =
-   else:
-     result = fileInfoIdx(conf, fullPath)
- 
-+proc rot13(result: var string) =
-+  # don't mangle .nim
-+  let finalIdx =
-+    if result.endsWith(".nim"): result.len - 4
-+    else: result.len
-+  for i, c in result[0..<finalIdx]:
-+    case c
-+    of 'a'..'m', 'A'..'M': result[i] = char(c.uint8 + 13)
-+    of 'n'..'z', 'N'..'Z': result[i] = char(c.uint8 - 13)
-+    else: discard
-+
- proc mangleModuleName*(conf: ConfigRef; path: AbsoluteFile): string =
-   ## Mangle a relative module path to avoid path and symbol collisions.
-   ##
-@@ -87,9 +98,11 @@ proc mangleModuleName*(conf: ConfigRef; path: AbsoluteFile): string =
-   ##
-   ## Example:
-   ## `foo-#head/../bar` becomes `@foo-@hhead@s..@sbar`
--  "@m" & relativeTo(path, conf.projectPath).string.multiReplace(
-+  result = "@m" & relativeTo(path, conf.projectPath).string.multiReplace(
-     {$os.DirSep: "@s", $os.AltSep: "@s", "#": "@h", "@": "@@", ":": "@c"})
-+  rot13(result)
- 
- proc demangleModuleName*(path: string): string =
-   ## Demangle a relative module path.
-   result = path.multiReplace({"@@": "@", "@h": "#", "@s": "/", "@m": "", "@c": ":"})
-+  rot13(result)
diff --git a/pkgs/by-name/ni/nim-unwrapped-2_2/NIM_CONFIG_DIR.patch b/pkgs/by-name/ni/nim-unwrapped/NIM_CONFIG_DIR.patch
similarity index 100%
rename from pkgs/by-name/ni/nim-unwrapped-2_2/NIM_CONFIG_DIR.patch
rename to pkgs/by-name/ni/nim-unwrapped/NIM_CONFIG_DIR.patch
diff --git a/pkgs/by-name/ni/nim-unwrapped/extra-mangling.patch b/pkgs/by-name/ni/nim-unwrapped/extra-mangling.patch
new file mode 100644
index 000000000000..8461cd406890
--- /dev/null
+++ b/pkgs/by-name/ni/nim-unwrapped/extra-mangling.patch
@@ -0,0 +1,17 @@
+diff --git a/compiler/modulegraphs.nim b/compiler/modulegraphs.nim
+index 55f751cda..b0b3e3f40 100644
+--- a/compiler/modulegraphs.nim
++++ b/compiler/modulegraphs.nim
+@@ -466,7 +466,11 @@ proc uniqueModuleName*(conf: ConfigRef; m: PSym): string =
+   for i in 0..<trunc:
+     let c = rel[i]
+     case c
+-    of 'a'..'z', '0'..'9':
++    of 'a'..'m':
++      result.add char(c.uint8 + 13)
++    of 'n'..'z':
++      result.add char(c.uint8 - 13)
++    of '0'..'9':
+       result.add c
+     of {os.DirSep, os.AltSep}:
+       result.add 'Z' # because it looks a bit like '/'
diff --git a/pkgs/by-name/ni/nim-unwrapped-2_2/nixbuild.patch b/pkgs/by-name/ni/nim-unwrapped/nixbuild.patch
similarity index 100%
rename from pkgs/by-name/ni/nim-unwrapped-2_2/nixbuild.patch
rename to pkgs/by-name/ni/nim-unwrapped/nixbuild.patch
diff --git a/pkgs/by-name/ni/nim-unwrapped-2_2/openssl.patch b/pkgs/by-name/ni/nim-unwrapped/openssl.patch
similarity index 100%
rename from pkgs/by-name/ni/nim-unwrapped-2_2/openssl.patch
rename to pkgs/by-name/ni/nim-unwrapped/openssl.patch
diff --git a/pkgs/by-name/ni/nim-unwrapped-2_2/package.nix b/pkgs/by-name/ni/nim-unwrapped/package.nix
similarity index 91%
rename from pkgs/by-name/ni/nim-unwrapped-2_2/package.nix
rename to pkgs/by-name/ni/nim-unwrapped/package.nix
index 6a3c02fe4485..08389b6d9a7c 100644
--- a/pkgs/by-name/ni/nim-unwrapped-2_2/package.nix
+++ b/pkgs/by-name/ni/nim-unwrapped/package.nix
@@ -13,12 +13,12 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "nim-unwrapped";
-  version = "2.2.4";
+  version = "2.2.10";
   strictDeps = true;
 
   src = fetchurl {
     url = "https://nim-lang.org/download/nim-${finalAttrs.version}.tar.xz";
-    hash = "sha256-+CtBl1D8zlYfP4l6BIaxgBhoRddvtdmfJIzhZhCBicc=";
+    hash = "sha256-eVe37QBCBrzxC8xPO0dEFTh45i8kMVUqmo6dP0Do1dU=";
   };
 
   buildInputs = [
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
     ./nixbuild.patch
     # Load libraries at runtime by absolute path
 
-    ./extra-mangling-2.patch
+    ./extra-mangling.patch
     # Mangle store paths of modules to prevent runtime dependence.
 
     ./openssl.patch
@@ -67,9 +67,7 @@ stdenv.mkDerivation (finalAttrs: {
     "--cpu:${stdenv.hostPlatform.nim.cpu}"
     "--os:${stdenv.hostPlatform.nim.os}"
     "-d:release"
-    "-d:useGnuReadline"
-  ]
-  ++ lib.optional (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isLinux) "-d:nativeStacktrace";
+  ];
 
   preBuild = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     substituteInPlace makefile \
diff --git a/pkgs/by-name/ni/nim-2_2/nim2.cfg.patch b/pkgs/by-name/ni/nim/nim2.cfg.patch
similarity index 100%
rename from pkgs/by-name/ni/nim-2_2/nim2.cfg.patch
rename to pkgs/by-name/ni/nim/nim2.cfg.patch
diff --git a/pkgs/by-name/ni/nim-2_2/package.nix b/pkgs/by-name/ni/nim/package.nix
similarity index 96%
rename from pkgs/by-name/ni/nim-2_2/package.nix
rename to pkgs/by-name/ni/nim/package.nix
index 350d235887b9..4cafcafd2318 100644
--- a/pkgs/by-name/ni/nim-2_2/package.nix
+++ b/pkgs/by-name/ni/nim/package.nix
@@ -8,7 +8,7 @@
   makeWrapper,
   openssl,
   pcre,
-  nim-unwrapped-2_2 ? buildPackages.nim-unwrapped-2_2,
+  nim-unwrapped ? buildPackages.nim-unwrapped,
 }:
 
 let
@@ -18,7 +18,7 @@ let
       targetPlatformConfig = stdenv.targetPlatform.config;
     in
     stdenv.mkDerivation (finalAttrs: {
-      name = "${targetPlatformConfig}-nim-wrapper-${nimUnwrapped.version}";
+      pname = "${targetPlatformConfig}-nim-wrapper";
       inherit (nimUnwrapped) version;
       preferLocalBuild = true;
       strictDeps = true;
@@ -148,6 +148,6 @@ let
     });
 in
 wrapNim {
-  nimUnwrapped = nim-unwrapped-2_2;
+  nimUnwrapped = nim-unwrapped;
   patches = [ ./nim2.cfg.patch ];
 }
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 2437fab8052a..7f65cdfb6416 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1621,6 +1621,16 @@ mapAliases {
   nfstrace = throw "nfstrace has been removed, as it was broken"; # Added 2025-08-25
   nginxQuic = throw "'nginxQuic' has been removed. QUIC support is now available in the default nginx builds.";
   ngrid = throw "'ngrid' has been removed as it has been unmaintained upstream and broken"; # Added 2025-11-15
+  nim1 = throw "'nim1' has reached EOL, please use 'nim'"; # Added 2026-03-06
+  nim-unwrapped-1 = throw "'nim-unwrapped-1' has reached EOL, please use 'nim-unwrapped'"; # Added 2026-03-06
+  nim-unwrapped-2 = throw "'nim-unwrapped-2' has been upgraded and removed, please use 'nim-unwrapped'"; # Added 2026-03-06
+  nim-unwrapped-2_0 = throw "'nim-unwrapped-2_0' has been upgraded and removed, please use 'nim-unwrapped'"; # Added 2026-03-06
+  nim-unwrapped-2_2 = throw "'nim-unwrapped-2_2' has been upgraded and removed, please use 'nim-unwrapped'"; # Added 2026-03-06
+  nim-unwrapped_1_0 = throw "'nim-unwrapped_1_0' has reached EOL, please use 'nim-unwrapped'"; # Added 2026-03-06
+  nim_1_0 = throw "'nim_1_0' has reached EOL, please use 'nim'"; # Added 2026-03-06
+  nim_2 = throw "'nim_2' has been upgraded and removed, please use 'nim'"; # Added 2026-03-06
+  nim_2_0 = throw "'nim_2_0' has been upgraded and removed, please use 'nim'"; # Added 2026-03-06
+  nim_2_2 = throw "'nim_2_2' has been upgraded and removed, please use 'nim'"; # Added 2026-03-06
   nimbo = throw "'nimbo' has been removed due to being archived upstream."; # Added 2026-01-18
   nitrokey-fido2-firmware = throw "'nitrokey-fido2-firmware' has been removed as it was broken and unmaintained upstream since 2022"; # Added 2026-03-23
   nix-direnv-flakes = throw "'nix-direnv-flakes' has been renamed to/replaced by 'nix-direnv'"; # Converted to throw 2025-10-27
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f4e48cfb7c1c..b1894c6bc3bd 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4024,13 +4024,6 @@ with pkgs;
 
   mozart2-binary = callPackage ../development/compilers/mozart/binary.nix { };
 
-  nim = nim2;
-  nim1 = nim-1_0;
-  nim2 = nim-2_2;
-  nim-unwrapped = nim-unwrapped-2_2;
-  nim-unwrapped-1 = nim-unwrapped-1_0;
-  nim-unwrapped-2 = nim-unwrapped-2_2;
-
   buildNimPackage = callPackage ../build-support/build-nim-package.nix { };
   buildNimSbom = callPackage ../build-support/build-nim-sbom.nix { };
   nimOverrides = callPackage ./nim-overrides.nix { };

From d5f38069017327e671372912d2e79ef1c8d7bb48 Mon Sep 17 00:00:00 2001
From: eveeifyeve <88671402+Eveeifyeve@users.noreply.github.com>
Date: Sat, 7 Mar 2026 07:10:19 +1100
Subject: [PATCH 2/6] buildNimPackage: warn of removal of requiredNimVersion
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

With the rise of the nim refractor this removes the need to specify
versions.

Co-authored-by: éclairevoyant
<848000+eclairevoyant@users.noreply.github.com>
---
 pkgs/build-support/build-nim-package.nix | 31 +++++++++++++++---------
 1 file changed, 20 insertions(+), 11 deletions(-)

diff --git a/pkgs/build-support/build-nim-package.nix b/pkgs/build-support/build-nim-package.nix
index f5e093019935..f953c108fd85 100644
--- a/pkgs/build-support/build-nim-package.nix
+++ b/pkgs/build-support/build-nim-package.nix
@@ -5,7 +5,6 @@
   stdenv,
   nim,
   nim_builder,
-  defaultNimVersion ? 2,
   nimOverrides,
   buildNimPackage,
 }:
@@ -16,6 +15,7 @@ let
     enableParallelBuilding = true;
     __structuredAttrs = true;
     doCheck = true;
+
     configurePhase = ''
       runHook preConfigure
       export NIX_NIM_BUILD_INPUTS=''${pkgsHostTarget[@]} $NIX_NIM_BUILD_INPUTS
@@ -107,25 +107,34 @@ let
 
       finalOverride =
         {
-          depsBuildBuild ? [ ],
-          nativeBuildInputs ? [ ],
           nimFlags ? [ ],
-          requiredNimVersion ? defaultNimVersion,
           passthru ? { },
+          nativeBuildInputs ? [ ],
+          depsBuildBuild ? [ ],
           ...
-        }:
+        }@args:
         (
-          if requiredNimVersion == 2 then
-            {
-              depsBuildBuild = [ nim_builder ] ++ depsBuildBuild;
-              nativeBuildInputs = [ nim ] ++ nativeBuildInputs;
-            }
+          #TODO: Remove at 26.11
+          if args ? requiredNimVersion then
+            if args.requiredNimVersion == 2 then
+              lib.warn ''
+                `requiredNimVersion' is deprecated and will be removed in nixpkgs 26.11.
+                Please update your package to remove this.
+              ''
+            else
+              throw ''
+                `requiredNimVersion' ${toString args.requiredNimVersion} is not supported.
+                Ensure your package supports nim 2, and remove `requiredNimVersion'.
+              ''
           else
-            throw "requiredNimVersion ${toString requiredNimVersion} is not valid"
+            { }
         )
         // {
+          nativeBuildInputs = [ nim ] ++ nativeBuildInputs;
+          depsBuildBuild = [ nim_builder ] ++ depsBuildBuild;
           nimFlags = lockFileNimFlags ++ nimFlags;
           passthru = passthru // {
+
             # allow overriding the result of buildNimPackageArgs before this composition is applied
             # this allows overriding the lockFile for packages built using buildNimPackage
             # this is adapted from mkDerivationExtensible in stdenv.mkDerivation

From eec3e392d1862d49969beb75dd07a729002b6800 Mon Sep 17 00:00:00 2001
From: eveeifyeve <88671402+Eveeifyeve@users.noreply.github.com>
Date: Wed, 18 Mar 2026 21:23:34 +1100
Subject: [PATCH 3/6] nim-unwrapped: switch to actually bootstrapped compiler

This makes nim use a boostrappped compiler.
---
 pkgs/by-name/ni/nim-unwrapped/package.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/by-name/ni/nim-unwrapped/package.nix b/pkgs/by-name/ni/nim-unwrapped/package.nix
index 08389b6d9a7c..d22fa8a7e090 100644
--- a/pkgs/by-name/ni/nim-unwrapped/package.nix
+++ b/pkgs/by-name/ni/nim-unwrapped/package.nix
@@ -49,6 +49,11 @@ stdenv.mkDerivation (finalAttrs: {
         pname = "nim-bootstrap";
         inherit (finalAttrs) version src preBuild;
         enableParallelBuilding = true;
+        buildPhase = ''
+          runHook preBuild
+          ./build.sh
+          runHook postBuild
+        '';
         installPhase = ''
           runHook preInstall
           install -Dt $out/bin bin/nim

From c996582058ca8a76d5ceb03db333d5c7853b650a Mon Sep 17 00:00:00 2001
From: eveeifyeve <88671402+Eveeifyeve@users.noreply.github.com>
Date: Thu, 19 Mar 2026 22:12:43 +1100
Subject: [PATCH 4/6] nim-unwrapped: remove invalid `gimportc` from openssl
 patch

This fixes an issue with openssl patch in nim where gimportc was invalid
Co-authored-by: Jake Leahy <jake@leahy.dev>
---
 pkgs/by-name/ni/nim-unwrapped/openssl.patch | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/pkgs/by-name/ni/nim-unwrapped/openssl.patch b/pkgs/by-name/ni/nim-unwrapped/openssl.patch
index 8cbc2a4cf26e..95dbcab1c52b 100644
--- a/pkgs/by-name/ni/nim-unwrapped/openssl.patch
+++ b/pkgs/by-name/ni/nim-unwrapped/openssl.patch
@@ -48,21 +48,21 @@ index e659746ee..dfb2d3cf2 100644
        SSLeay()
  
 -    proc ERR_load_BIO_strings*() {.cdecl, dynlib: DLLUtilName, importc.}
-+    proc ERR_load_BIO_strings*() {.cdecl, gimportc.}
++    proc ERR_load_BIO_strings*() {.cdecl, importc.}
    else:
 -    proc OPENSSL_init_ssl*(opts: uint64, settings: uint8): cint {.cdecl, dynlib: DLLSSLName, importc, discardable.}
-+    proc OPENSSL_init_ssl*(opts: uint64, settings: uint8): cint {.cdecl, gimportc, discardable.}
++    proc OPENSSL_init_ssl*(opts: uint64, settings: uint8): cint {.cdecl, importc, discardable.}
      proc SSL_library_init*(): cint {.discardable.} =
        ## Initialize SSL using OPENSSL_init_ssl for OpenSSL >= 1.1.0
        return OPENSSL_init_ssl(0.uint64, 0.uint8)
  
 -    proc TLS_method*(): PSSL_METHOD {.cdecl, dynlib: DLLSSLName, importc.}
-+    proc TLS_method*(): PSSL_METHOD {.cdecl, gimportc.}
++    proc TLS_method*(): PSSL_METHOD {.cdecl, importc.}
      proc SSLv23_method*(): PSSL_METHOD =
        TLS_method()
  
 -    proc OpenSSL_version_num(): culong {.cdecl, dynlib: DLLUtilName, importc.}
-+    proc OpenSSL_version_num(): culong {.cdecl, gimportc.}
++    proc OpenSSL_version_num(): culong {.cdecl, importc.}
  
      proc getOpenSSLVersion*(): culong =
        ## Return OpenSSL version as unsigned long
@@ -71,13 +71,13 @@ index e659746ee..dfb2d3cf2 100644
  
    when defined(libressl) or defined(openssl10):
 -    proc SSL_state(ssl: SslPtr): cint {.cdecl, dynlib: DLLSSLName, importc.}
-+    proc SSL_state(ssl: SslPtr): cint {.cdecl, gimportc.}
++    proc SSL_state(ssl: SslPtr): cint {.cdecl, importc.}
      proc SSL_in_init*(ssl: SslPtr): cint {.inline.} =
        SSL_state(ssl) and SSL_ST_INIT
    else:
 -    proc SSL_in_init*(ssl: SslPtr): cint {.cdecl, dynlib: DLLSSLName, importc.}
 -    proc SSL_CTX_set_ciphersuites*(ctx: SslCtx, str: cstring): cint {.cdecl, dynlib: DLLSSLName, importc.}
-+    proc SSL_in_init*(ssl: SslPtr): cint {.cdecl, gimportc.}
++    proc SSL_in_init*(ssl: SslPtr): cint {.cdecl, importc.}
 +    proc SSL_CTX_set_ciphersuites*(ctx: SslCtx, str: cstring): cint {.cdecl, importc.}
  
    template OpenSSL_add_all_algorithms*() = discard
@@ -89,7 +89,7 @@ index e659746ee..dfb2d3cf2 100644
 +  proc SSLv23_client_method*(): PSSL_METHOD {.cdecl, importc.}
 +  proc SSLv2_method*(): PSSL_METHOD {.cdecl, importc.}
 +  proc SSLv3_method*(): PSSL_METHOD {.cdecl, importc.}
-+  proc CRYPTO_set_mem_functions(a,b,c: pointer){.cdecl, gimportc.}
++  proc CRYPTO_set_mem_functions(a,b,c: pointer){.cdecl, importc.}
  
  else:
    # Here we're trying to stay compatible between openssl versions. Some

From 53dc2ea05ada19c15fdd3ae88b20de19ce38fa17 Mon Sep 17 00:00:00 2001
From: eveeifyeve <88671402+Eveeifyeve@users.noreply.github.com>
Date: Thu, 2 Apr 2026 01:54:27 +1100
Subject: [PATCH 5/6] nim: enable wrapper args for arm darwin

This fixes an issue where nim-gdb does find gdb in path
---
 pkgs/by-name/ni/nim/package.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/by-name/ni/nim/package.nix b/pkgs/by-name/ni/nim/package.nix
index 4cafcafd2318..38e8dcc47f20 100644
--- a/pkgs/by-name/ni/nim/package.nix
+++ b/pkgs/by-name/ni/nim/package.nix
@@ -86,7 +86,7 @@ let
           runHook postBuild
         '';
 
-      wrapperArgs = lib.optionals (!(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)) [
+      wrapperArgs = [
         "--prefix PATH : ${lib.makeBinPath [ buildPackages.gdb ]}:${placeholder "out"}/bin"
         # Used by nim-gdb
 

From 80f829b69a5cfbc23e85117a4f0e5d721bc9f24a Mon Sep 17 00:00:00 2001
From: eveeifyeve <88671402+Eveeifyeve@users.noreply.github.com>
Date: Sat, 15 Nov 2025 10:16:03 +1100
Subject: [PATCH 6/6] {mosdepth, nimlsp}: upgrade to nim

nim_lk: fix compatiblity with 2.2.8
---
 pkgs/by-name/mo/mosdepth/package.nix |  2 --
 pkgs/by-name/ni/nim_lk/nil.patch     | 13 +++++++++++++
 pkgs/by-name/ni/nim_lk/package.nix   |  4 ++++
 pkgs/by-name/ni/nimlsp/package.nix   | 14 +++-----------
 4 files changed, 20 insertions(+), 13 deletions(-)
 create mode 100644 pkgs/by-name/ni/nim_lk/nil.patch

diff --git a/pkgs/by-name/mo/mosdepth/package.nix b/pkgs/by-name/mo/mosdepth/package.nix
index b7064c65e635..2750e21a8a04 100644
--- a/pkgs/by-name/mo/mosdepth/package.nix
+++ b/pkgs/by-name/mo/mosdepth/package.nix
@@ -9,8 +9,6 @@ buildNimPackage (finalAttrs: {
   pname = "mosdepth";
   version = "0.3.13";
 
-  requiredNimVersion = 1;
-
   src = fetchFromGitHub {
     owner = "brentp";
     repo = "mosdepth";
diff --git a/pkgs/by-name/ni/nim_lk/nil.patch b/pkgs/by-name/ni/nim_lk/nil.patch
new file mode 100644
index 000000000000..3f50a480c44b
--- /dev/null
+++ b/pkgs/by-name/ni/nim_lk/nil.patch
@@ -0,0 +1,13 @@
+diff --git a/src/nim_lk.nim b/src/nim_lk.nim
+index 09ced9d..45c5ddc 100644
+--- a/src/nim_lk.nim
++++ b/src/nim_lk.nim
+@@ -573,7 +573,7 @@ proc update(bom: JsonNode; bomRef: string; byName: bool): bool =
+   let comp = bom.getComponent(bomRef, byName)
+   assert not comp.isNil
+   var bomRef = comp{"bom-ref"}.getStr
+-  assert not bomRef.isNil
++  assert bomRef != ""
+   var suitableRefFound = false
+   let extRefs = comp{"externalReferences"}
+   for extRef in extRefs.elems:
diff --git a/pkgs/by-name/ni/nim_lk/package.nix b/pkgs/by-name/ni/nim_lk/package.nix
index 99e921819f17..e08ad1d06ad9 100644
--- a/pkgs/by-name/ni/nim_lk/package.nix
+++ b/pkgs/by-name/ni/nim_lk/package.nix
@@ -23,6 +23,10 @@ buildNimSbom (finalAttrs: {
   buildInputs = [ openssl ];
   nativeBuildInputs = [ makeWrapper ];
 
+  patches = [
+    ./nil.patch
+  ];
+
   postFixup = ''
     wrapProgram $out/bin/nim_lk \
       --suffix PATH : ${
diff --git a/pkgs/by-name/ni/nimlsp/package.nix b/pkgs/by-name/ni/nimlsp/package.nix
index 1e01f33bb859..cd97ed0c8fa5 100644
--- a/pkgs/by-name/ni/nimlsp/package.nix
+++ b/pkgs/by-name/ni/nimlsp/package.nix
@@ -3,17 +3,9 @@
   buildNimPackage,
   fetchFromGitHub,
   srcOnly,
-  nim-2_0,
-  nim-unwrapped-2_0,
+  nim-unwrapped,
 }:
-
-let
-  buildNimPackage' = buildNimPackage.override {
-    # Do not build with Nim-2.2.x.
-    nim2 = nim-2_0;
-  };
-in
-buildNimPackage' (finalAttrs: {
+buildNimPackage (finalAttrs: {
   pname = "nimlsp";
   version = "0.4.6";
 
@@ -40,7 +32,7 @@ buildNimPackage' (finalAttrs: {
 
   nimFlags = [
     "--threads:on"
-    "-d:explicitSourcePath=${srcOnly nim-unwrapped-2_0}"
+    "-d:explicitSourcePath=${srcOnly nim-unwrapped}"
     "-d:tempDir=/tmp"
   ];