1 files changed, 33 insertions, 0 deletions
diff --git a/pkgs/test/texlive/default.nix b/pkgs/test/texlive/default.nix
index 86c0a7f795b..caeca4ae00c 100644
--- a/pkgs/test/texlive/default.nix
+++ b/pkgs/test/texlive/default.nix
@@ -119,4 +119,37 @@
     texdoc --debug --list texdoc | tee "$out"
     grep texdoc.pdf "$out"
   '';
+
+  # test that language files are generated as expected
+  hyphen-base = runCommandNoCC "texlive-test-hyphen-base" {
+    hyphenBase = lib.head texlive.hyphen-base.pkgs;
+    schemeFull = texlive.combined.scheme-full;
+    schemeInfraOnly = texlive.combined.scheme-infraonly;
+  } ''
+    mkdir -p "$out"/{scheme-infraonly,scheme-full}
+
+    # create language files with no hyphenation patterns
+    cat "$hyphenBase"/tex/generic/config/language.us >language.dat
+    cat "$hyphenBase"/tex/generic/config/language.us.def >language.def
+    cat "$hyphenBase"/tex/generic/config/language.us.lua >language.dat.lua
+
+    cat >>language.dat.lua <<EOF
+    }
+    EOF
+
+    cat >>language.def <<EOF
+    %%% No changes may be made beyond this point.
+
+    \uselanguage {USenglish}             %%% This MUST be the last line of the file.
+    EOF
+
+    for fname in language.{dat,def,dat.lua} ; do
+      diff --ignore-matching-lines='^\(%\|--\) Generated by ' -u \
+        {"$hyphenBase","$schemeFull"/share/texmf}/tex/generic/config/"$fname" \
+        | tee "$out/scheme-full/$fname.patch"
+      diff --ignore-matching-lines='^\(%\|--\) Generated by ' -u \
+        {,"$schemeInfraOnly"/share/texmf/tex/generic/config/}"$fname" \
+        | tee "$out/scheme-infraonly/$fname.patch"
+    done
+  '';
 }