From 69b372d036e8602a35fcfbb82abadc7004bda692 Mon Sep 17 00:00:00 2001
From: Daniel Flanagan <daniel@lyte.dev>
Date: Fri, 2 Feb 2024 15:28:57 -0600
Subject: [PATCH] WIP font

---
 flake.nix                      |  2 +-
 pkgs/default.nix               | 10 ++++++++--
 pkgs/iosevka-lyte-term-min.nix | 29 +++++++++++++++++++++++++++++
 pkgs/iosevka-lyte-term.nix     | 26 ++++++++++++++++++++++++--
 pkgs/makesubset.bash           | 15 +++++++++++++++
 pkgs/subset-glyphs.txt         |  1 +
 6 files changed, 78 insertions(+), 5 deletions(-)
 create mode 100644 pkgs/iosevka-lyte-term-min.nix
 create mode 100644 pkgs/makesubset.bash
 create mode 100644 pkgs/subset-glyphs.txt

diff --git a/flake.nix b/flake.nix
index faf75dc..b9c17f6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -58,7 +58,7 @@
 
     # Your custom packages
     # Acessible through 'nix build', 'nix shell', etc
-    packages = forAllSystems (system: import ./pkgs nixpkgs.legacyPackages.${system});
+    packages = forAllSystems (system: import ./pkgs {pkgs = nixpkgs.legacyPackages.${system};});
 
     # Formatter for your nix files, available through 'nix fmt'
     # Other options beside 'alejandra' include 'nixpkgs-fmt'
diff --git a/pkgs/default.nix b/pkgs/default.nix
index 5aa4dfb..acbdccc 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -1,6 +1,12 @@
 # Custom packages, that can be defined similarly to ones from nixpkgs
 # You can build them using 'nix build .#example'
-{pkgs, ...}: {
-  iosevka-lyte-term = pkgs.callPackage ./iosevka-lyte-term.nix {inherit pkgs;};
+{pkgs, ...}: rec {
+  iosevka-lyte-term = pkgs.callPackage ./iosevka-lyte-term.nix {inherit (pkgs) iosevka;};
+  iosevka-lyte-term-min = pkgs.callPackage ./iosevka-lyte-term-min.nix {
+    inherit pkgs;
+    inherit (pkgs) brotli;
+    inherit iosevka-lyte-term;
+    fonttools = pkgs.python311Packages.fonttools;
+  };
   # example = pkgs.callPackage ./example { };
 }
diff --git a/pkgs/iosevka-lyte-term-min.nix b/pkgs/iosevka-lyte-term-min.nix
new file mode 100644
index 0000000..f13279c
--- /dev/null
+++ b/pkgs/iosevka-lyte-term-min.nix
@@ -0,0 +1,29 @@
+{
+  pkgs,
+  fonttools,
+  brotli,
+  iosevka-lyte-term,
+  ...
+}: let
+  BASE_FONTS = "${iosevka-lyte-term}/share/fonts/truetype";
+in
+  pkgs.stdenvNoCC.mkDerivation {
+    inherit BASE_FONTS;
+    pname = "iosevka-lyte-term-min";
+    version = iosevka-lyte-term.version;
+    # do I need to include makesubset.bash and subset-glyphs.txt?
+    buildInputs = [fonttools brotli];
+    srcs = [
+      BASE_FONTS
+      ./makesubset.bash
+    ];
+    installPhase = ''
+      mkdir -p "$out/share/fonts/truetype"
+      for f in "$BASE_FONTS"/dist/iosevkalyteweb/woff2/*.woff2; do
+      	if [[ $f == *".subset.woff2"* ]]; then
+      		pyftsubset "$f" --name-IDs+=0,4,6 --text-file=./subset-glyphs.txt --flavor=woff2 &
+      	fi
+      done
+      wait
+    '';
+  }
diff --git a/pkgs/iosevka-lyte-term.nix b/pkgs/iosevka-lyte-term.nix
index a3f259e..fc66e18 100644
--- a/pkgs/iosevka-lyte-term.nix
+++ b/pkgs/iosevka-lyte-term.nix
@@ -1,6 +1,28 @@
-{pkgs, ...}:
-pkgs.iosevka.override {
+{iosevka, ...}:
+(iosevka.overrideAttrs
+  (final: prev: {
+    pname = "iosevka-lyte-term";
+
+    buildPhase = ''
+      export HOME=$TMPDIR
+      runHook preBuild
+      npm run build --no-update-notifier -- --jCmd=$NIX_BUILD_CORES --verbose=9 ttf::iosevka-lyteterm
+      npm run build --no-update-notifier -- --jCmd=$NIX_BUILD_CORES --verbose=9 woff2::iosevka-lyteterm
+      runHook postBuild
+    '';
+
+    installPhase = ''
+      runHook preInstall
+      fontdir="$out/share/fonts"
+      install -d "$fontdir"
+      install "dist/$pname/ttf"/* "$fontdir/truetype"
+      install "dist/$pname/woff2"/* "$fontdir/woff2"
+      runHook postInstall
+    '';
+  }))
+.override {
   set = "lyteterm";
+
   privateBuildPlan = ''
     [buildPlans.iosevka-lyteterm]
     family = "IosevkaLyteTerm"
diff --git a/pkgs/makesubset.bash b/pkgs/makesubset.bash
new file mode 100644
index 0000000..0812af7
--- /dev/null
+++ b/pkgs/makesubset.bash
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+echo "out: $out"
+echo "src: $src"
+echo "BASE_FONTS: $BASE_FONTS"
+echo "srcs: $srcs"
+mkdir -p "$out/share/fonts/truetype"
+for f in "$src"/dist/iosevkalyteweb/woff2/*.woff2; do
+	if [[ $f == *".subset.woff2"* ]]; then
+		pyftsubset "$f" --name-IDs+=0,4,6 --text-file=./subset-glyphs.txt --flavor=woff2 &
+	fi
+done
+wait
+mv ./dist/iosevkalyteweb/woff2/*.subset.woff2 ./dist/iosevkalyteweb/woff2-subset/
+touch ./dist/iosevkalyteweb/woff2-subset/
diff --git a/pkgs/subset-glyphs.txt b/pkgs/subset-glyphs.txt
new file mode 100644
index 0000000..756d2b7
--- /dev/null
+++ b/pkgs/subset-glyphs.txt
@@ -0,0 +1 @@
+ !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~ ‌… ⎜⎡⎣─│┊└├┬╯░▒♯