hasklig: new font

Closes #4847

Signed-off-by: Mateusz Kowalczyk <[e-mail]>

lib/maintainers.nix

···
   coroa = "Jonas Hörsch <[e-mail]>";
   cstrahan = "Charles Strahan <[e-mail]>";
   DamienCassou = "Damien Cassou <[e-mail]>";
+  davidrusu = "David Rusu <[e-mail]>";
   dbohdan = "Danyil Bohdan <[e-mail]>";
   DerGuteMoritz = "Moritz Heidkamp <[e-mail]>";
   dmalikov = "Dmitry Malikov <[e-mail]>";

pkgs/data/fonts/hasklig/default.nix

···
+{stdenv, fetchurl, unzip}:
+
+stdenv.mkDerivation {
+  name = "hasklig-0.4";
+
+  src = fetchurl {
+    url = "https://github.com/i-tu/Hasklig/releases/download/0.4/Hasklig-0.4.zip";
+    sha256 = "14j0zfapw6s6x5psp1rvx2i59rxdwb1jgwfgfhzhypr22qy40xi8";
+  };
+
+  buildInputs = [ unzip ];
+
+  sourceRoot = ".";
+
+  phases = [ "unpackPhase" "installPhase" ];
+
+  installPhase = ''
+    mkdir -p $out/share/fonts/opentype
+    cp *.otf $out/share/fonts/opentype
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = "https://github.com/i-tu/Hasklig";
+    description = "A font with ligatures for Haskell code based off Source Code Pro";
+    license = licenses.ofl;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ davidrusu ];
+  };
+}

pkgs/top-level/all-packages.nix

···
 
   r5rs = callPackage ../data/documentation/rnrs/r5rs.nix { };
 
+  hasklig = callPackage ../data/fonts/hasklig {};
+
   source-code-pro = callPackage ../data/fonts/source-code-pro {};
 
   source-sans-pro = callPackage ../data/fonts/source-sans-pro { };