texlivePackages.minted: fix compatibility with Python 3.14

Co-authored-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Assisted-by: Claude Code (Claude Opus 5.5)

pkgs/test/texlive/default.nix

@@ -421,6 +421,26 @@ rec {
         l3build install --full --texmfhome "$out"
       '';
 
+  # verify that minted can highlight code via latexminted
+  minted = mkTeXTest {
+    name = "minted";
+    format = "pdflatex";
+    texLive = texliveSmall.withPackages (ps: [ ps.minted ]);
+    text = ''
+      \documentclass{article}
+      \usepackage{minted}
+      \begin{document}
+      \begin{minted}{python}
+      def fib(n):
+          a, b = 0, 1
+          for _ in range(n):
+              a, b = b, a + b
+          return a
+      \end{minted}
+      \end{document}
+    '';
+  };
+
   # verify that the restricted mode gets enabled when
   # needed (detected by checking if it disallows --gscmd)
   repstopdf =

pkgs/tools/typesetting/tex/texlive/default.nix

@@ -6,7 +6,7 @@
 {
   lib,
   stdenv,
-  fetchpatch,
+  fetchpatch2,
   fetchurl,
   runCommand,
   writeShellScript,
@@ -47,6 +47,7 @@
   luajit,
   texinfo,
   # for bin.nix
+  fetchpatch,
   gnum4,
   jdk_headless,
   perlPackages,
@@ -102,7 +103,7 @@ let
         inherit
           stdenv
           lib
-          fetchpatch
+          fetchpatch2
           bin
           tlpdb
           tlpdbxz
@@ -128,6 +129,7 @@ let
           zip
           luajit
           texinfo
+          unzip
           ;
       };
     in

pkgs/tools/typesetting/tex/texlive/tlpdb-overrides.nix

@@ -1,6 +1,6 @@
 {
   stdenv,
-  fetchpatch,
+  fetchpatch2,
   lib,
   tlpdb,
   bin,
@@ -27,6 +27,7 @@
   zip,
   luajit,
   texinfo,
+  unzip,
 }:
 oldTlpdb:
 let
@@ -470,9 +471,31 @@ lib.recursiveUpdate orig rec {
   '';
 
   # find files in script directory, not in binary directory
-  minted.postFixup = ''
-    substituteInPlace "$out"/bin/latexminted --replace-fail "__file__" "\"$scriptsFolder/latexminted.py\""
-  '';
+  # fix compatibility with Python 3.14 by loading a patched copy of the latexminted package
+  # (the patch is applied here rather than in postUnpack, since repacking the wheel inside the
+  # fixed-output tex container would make its hash depend on the zip/zlib implementation)
+  minted.extraNativeBuildInputs = [ unzip ];
+  minted.postFixup =
+    let
+      patch = fetchpatch2 {
+        name = "minted-python314-compat.patch";
+        url = "https://github.com/gpoore/minted/commit/2a7b3a48e47b834bbc4a616679a0ef9710896a16.diff";
+        hash = "sha256-JcaQjSDqBQFsWLNRaOSNxCvPNa2HktfuzjsMKAWUPl8=";
+        includes = [ "python/latexminted/cmdline.py" ];
+      };
+    in
+    ''
+      substituteInPlace "$out"/bin/latexminted --replace-fail "__file__" "\"$scriptsFolder/latexminted.py\""
+
+      latexmintedLib="$out"/share/minted/python
+      mkdir -p "$latexmintedLib"
+      unzip -q "$scriptsFolder"/latexminted-0.6.0-py3-none-any.whl 'latexminted/*' -d "$latexmintedLib"
+      sed -i 's/\r$//' "$latexmintedLib"/latexminted/cmdline.py
+      patch -p2 -d "$latexmintedLib" -i "${patch}"
+      substituteInPlace "$out"/bin/latexminted \
+        --replace-fail "from latexminted.cmdline import main" \
+          "sys.path.insert(0, '$latexmintedLib')"$'\n'"from latexminted.cmdline import main"
+    '';
 
   # find files in source container, fix incompatibilities with snobol4
   texaccents.postFixup = ''