From 91c304030a509c1913d6baf5d274e2d078d10bfd Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Thu, 27 Sep 2018 11:54:40 -0400
Subject: texlive: generate MkIV caches

Documentation:
http://www.pragma-ade.com/general/manuals/tools-mkiv.pdf

Fixes: #19279
Closes: #47370
---
 pkgs/tools/typesetting/tex/texlive/combine.nix | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/pkgs/tools/typesetting/tex/texlive/combine.nix b/pkgs/tools/typesetting/tex/texlive/combine.nix
index 8a01ac744145..f76b71ced3cf 100644
--- a/pkgs/tools/typesetting/tex/texlive/combine.nix
+++ b/pkgs/tools/typesetting/tex/texlive/combine.nix
@@ -235,6 +235,19 @@ in buildEnv {
         ln -s -t . ../texmf/doc/"$d"/*
       )
     done
+  '' +
+  # MkIV uses its own lookup mechanism and we need to initialize
+  # caches for it. Unsetting TEXMFCNF is needed to let mtxrun
+  # determine it from kpathsea so that the config path is given with
+  # "selfautodir:" as it will be in runtime. This is important because
+  # the cache is identified by a hash of this path.
+  ''
+    if [[ -e "$out/bin/mtxrun" ]]; then
+      (
+        unset TEXMFCNF
+        mtxrun --generate
+      )
+    fi
   ''
     + bin.cleanBrokenLinks
   ;
-- 
cgit 1.4.1