1 files changed, 20 insertions, 6 deletions
diff --git a/pkgs/tools/typesetting/biber/default.nix b/pkgs/tools/typesetting/biber/default.nix
index 449208e9d5d..992da3578e5 100644
--- a/pkgs/tools/typesetting/biber/default.nix
+++ b/pkgs/tools/typesetting/biber/default.nix
@@ -1,7 +1,21 @@
-{ stdenv, fetchpatch, perlPackages, shortenPerlShebang, texlive }:
+{ lib, stdenv, fetchurl, fetchpatch, perlPackages, shortenPerlShebang, texlive }:
 
 let
-  biberSource = stdenv.lib.head (builtins.filter (p: p.tlType == "source") texlive.biber.pkgs);
+  biberSource = lib.head (builtins.filter (p: p.tlType == "source") texlive.biber.pkgs);
+
+  # perl 5.32.0 ships with U:C 1.27
+  UnicodeCollate_1_29 = perlPackages.buildPerlPackage rec {
+    pname = "Unicode-Collate";
+    version = "1.29";
+    src = fetchurl {
+      url = "mirror://cpan/authors/id/S/SA/SADAHIRO/${pname}-${version}.tar.gz";
+      sha256 = "0dr4k10fgbsczh4sz7w8d0nnba38r6jrg87cm3gw4xxgn55fzj7l";
+    };
+    meta = {
+      description = "Unicode Collation Algorithm";
+      license = perlPackages.perl.meta.license;
+    };
+  };
 in
 
 perlPackages.buildPerlModule {
@@ -16,18 +30,18 @@ perlPackages.buildPerlModule {
     DateTime DateTimeFormatBuilder DateTimeCalendarJulian
     ExtUtilsLibBuilder FileSlurper FileWhich IPCRun3 LogLog4perl LWPProtocolHttps ListAllUtils
     ListMoreUtils MozillaCA ParseRecDescent IOString ReadonlyXS RegexpCommon TextBibTeX
-    UnicodeLineBreak URI XMLLibXMLSimple XMLLibXSLT XMLWriter
+    UnicodeCollate_1_29 UnicodeLineBreak URI XMLLibXMLSimple XMLLibXSLT XMLWriter
     ClassAccessor TextCSV TextCSV_XS TextRoman DataUniqid LinguaTranslit SortKey
     TestDifferences
     PerlIOutf8_strict
   ];
-  nativeBuildInputs = stdenv.lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
 
-  postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.isDarwin ''
     shortenPerlShebang $out/bin/biber
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Backend for BibLaTeX";
     license = with licenses; [ artistic1 gpl1Plus ];
     platforms = platforms.unix;