From 822d857ba913e48661faba0ac7cf5f4b69d70499 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Madeleine=20Sydney=20=C5=9Alaga?= <msyds@deertopia.net>
Date: Sat, 22 Nov 2025 02:04:44 -0700
Subject: [PATCH] feat(emacs): configure plex in a package

---
 modules/home/users/msyds/emacs.nix            |  1 +
 .../home/users/msyds/emacs/nix/plex-latex.nix | 42 +++++++++++++++----
 .../msyds/emacs/nix/plex-latex/syd-plex.sty   | 11 +++++
 3 files changed, 46 insertions(+), 8 deletions(-)
 create mode 100644 modules/home/users/msyds/emacs/nix/plex-latex/syd-plex.sty

diff --git a/modules/home/users/msyds/emacs.nix b/modules/home/users/msyds/emacs.nix
index 83dbbe6..2b98f52 100644
--- a/modules/home/users/msyds/emacs.nix
+++ b/modules/home/users/msyds/emacs.nix
@@ -19,6 +19,7 @@ in {
   imports = [
     ./emacs/nix/jinx.nix
     ./emacs/nix/tufte-latex.nix
+    ./emacs/nix/plex-latex.nix
   ];
 
   config = lib.mkIf cfg.enable {
diff --git a/modules/home/users/msyds/emacs/nix/plex-latex.nix b/modules/home/users/msyds/emacs/nix/plex-latex.nix
index de75f7e..eb4e262 100644
--- a/modules/home/users/msyds/emacs/nix/plex-latex.nix
+++ b/modules/home/users/msyds/emacs/nix/plex-latex.nix
@@ -7,14 +7,40 @@ in {
   };
 
   config = lib.mkIf cfg.enable {
-    sydnix.emacs.tex.extraTexPackages = {
-      inherit (pkgs.texlive)
-        plex
-        plex-otf
-        fontaxes
-        unicode-math
-        xetex
+    sydnix.emacs.tex.extraTexPackages =
+      let syd-plex = pkgs.stdenvNoCC.mkDerivation (final: {
+          pname = "syd-plex-latex";
+          version = "1.0.0";
+          src = ./plex-latex;
+          nativeBuildInputs = [ pkgs.texlive.combined.scheme-small ];
+          passthru = {
+            pkgs = [ final.finalPackage ];
+            tlDeps = with pkgs.texlive; [
+              plex
+              plex-otf
+              fontaxes
+              unicode-math
+              xetex
+            ];
+            tlType = "run";
+          };
+          installPhase = ''
+            runHook preInstall
+            dir="$out/tex/latex/syd-plex"
+            mkdir -p "$dir"
+            mv syd-plex.sty "$dir"
+            runHook postInstall
+          '';
+        });
+      in {
+        inherit syd-plex;
+        inherit (pkgs.texlive)
+          plex
+          plex-otf
+          fontaxes
+          unicode-math
+          xetex
         ;
-    };
+      };
   };
 }
diff --git a/modules/home/users/msyds/emacs/nix/plex-latex/syd-plex.sty b/modules/home/users/msyds/emacs/nix/plex-latex/syd-plex.sty
new file mode 100644
index 0000000..f76d2ef
--- /dev/null
+++ b/modules/home/users/msyds/emacs/nix/plex-latex/syd-plex.sty
@@ -0,0 +1,11 @@
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{syd-plex}[2014/08/24 Configure IBM Plex fonts]
+Example LaTeX package
+
+% Redefine some commands to make unicode-math work lol.  See §3.1 of the
+% unicode-math manual.
+\renewcommand*{\mathrm}[1]{\symup{#1}}
+
+\RequirePackage{plex-otf}
+\setmathfont{IBM Plex Math}
+\setmainfont{IBM Plex Serif}