build: use working texlive mirror

build/texlive-url-mirror.patch

@@ -0,0 +1,27 @@
+diff --git a/pkgs/tools/typesetting/tex/texlive/bin.nix b/pkgs/tools/typesetting/tex/texlive/bin.nix
+index 5591f64cee..2bdbfd50a7 100644
+--- a/pkgs/tools/typesetting/tex/texlive/bin.nix
++++ b/pkgs/tools/typesetting/tex/texlive/bin.nix
+@@ -20,7 +20,7 @@ let
+   common = rec {
+     src = fetchurl {
+       url = # "ftp://tug.org/historic/systems/texlive/${year}/"
+-        "http://lipa.ms.mff.cuni.cz/~cunav5am/nix/texlive-2016" # FIXME: a proper mirror
++        "http://146.185.144.154/texlive-2016/"
+         + "/texlive-${year}0523b-source.tar.xz";
+       sha256 = "1v91vahxlxkdra0qz3f132vvx5d9cx2jy84yl1hkch0agyj2rcx8";
+     };
+diff --git a/pkgs/tools/typesetting/tex/texlive/default.nix b/pkgs/tools/typesetting/tex/texlive/default.nix
+index 692f6b1772..21463dc367 100644
+--- a/pkgs/tools/typesetting/tex/texlive/default.nix
++++ b/pkgs/tools/typesetting/tex/texlive/default.nix
+@@ -109,8 +109,7 @@ let
+       fixedHash = fixedHashes.${tlName} or null; # be graceful about missing hashes
+ 
+       url = args.url or "${urlPrefix}/${urlName}.tar.xz";
+-      urlPrefix = args.urlPrefix or
+-        http://lipa.ms.mff.cuni.cz/~cunav5am/nix/texlive-2016;
++      urlPrefix = http://146.185.144.154/texlive-2016;
+       # XXX XXX XXX FIXME: mirror the snapshot XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX
+       #  ("${mirror}/pub/tex/historic/systems/texlive/${bin.texliveYear}/tlnet-final/archive");
+       #mirror = "http://ftp.math.utah.edu";

shell.nix

@@ -1,12 +1,22 @@
 let 
   nixpkgs = import <nixpkgs> {};
-  pkgsSrc = nixpkgs.pkgs.fetchFromGitHub {
+  patchedPkgsSrc = nixpkgs.stdenv.mkDerivation {
+    name = "patchedPkgsSrc";
+    src = nixpkgs.pkgs.fetchFromGitHub {
       owner = "nixos";
       repo = "nixpkgs-channels";
-    rev = "b0d07aa894007a52466b06eced06c1eee469ee1c";
+      rev = "81fceb255448415e70b9e7775d590b6def45f861";
-    sha256 = "0cnwy3ivjz8z8jd5vvx4m5v76vzwq9hh7vh6gah83x47ggipk7ii";
+      sha256 = "0sfx21b9rb6qxjm7li3krk6ik0xxph1il7r5l69n8b9agp72yjfx";
     };
-  pkgs = import pkgsSrc {};
+    patches = [ ./build/texlive-url-mirror.patch ];
+    buildPhase = "";
+    installPhase = ''
+      cp -a . $out
+    '';
+    fixupPhase = "true";
+    postFixup = "true";
+  };
+  pkgs = import patchedPkgsSrc {};
 
   mytexlive =  (pkgs.texlive.combine {
     inherit (pkgs.texlive) scheme-full;