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fonts/constructium.nix

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+{ pkgs ? import <nixpkgs> {} }:
+pkgs.stdenv.mkDerivation rec {
+  pname = "constructium";
+  version = "2024-06-01";
+
+  src = pkgs.fetchzip {
+    url = "https://github.com/kreativekorp/open-relay/releases/download" +
+          "/2024-06-01/Constructium.zip";
+    hash = "sha256-W4MLyUq70igpN03557vS4s9nTTQC/2JT5ObA6ctj4wA=";
+    stripRoot = false;
+  };
+
+  installPhase = ''
+    dir=$out/share/fonts/opentype
+    mkdir -p $dir
+    cp ${src}/*.ttf $dir
+  '';
+
+  outputHashMode = "recursive";
+  outputHash = "sha256-80pNO5RtEhPfOzHzbDu2046Fnn+rUyYIOEw2OkMWXeg=";
+
+  meta = {
+    homepage = "http://www.kreativekorp.com/software/fonts/constructium";
+    description = "fork of Gentium with conlang support";
+    longDescription = ''
+      Constructium is a fork of SIL Gentium designed specifically to support
+      constructed scripts as encoded in the
+      [Under-ConScript Unicode Registry][ucsur].
+
+      [ucsur]: https://www.kreativekorp.com/ucsur
+    '';
+    platforms = pkgs.lib.platforms.all;
+  };
+}