diff --git a/pkgs/by-name/te/texpresso/package.nix b/pkgs/by-name/te/texpresso/package.nix
index 5427a98ddd5b..894dc5ea9b51 100644
--- a/pkgs/by-name/te/texpresso/package.nix
+++ b/pkgs/by-name/te/texpresso/package.nix
@@ -5,60 +5,65 @@
 
   # nativeBuildInputs
   makeWrapper,
+  pkg-config,
+  writeShellScriptBin,
 
   # buildInputs
+  fontconfig,
   freetype,
-  gumbo,
   harfbuzz,
+  icu,
   jbig2dec,
   libjpeg,
   mupdf,
-  openjpeg,
-  re2c,
   SDL2,
-
-  # passthru
-  callPackage,
-  writeScript,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "texpresso";
-  version = "0.1";
+  version = "0.1-unstable-2026-04-02";
 
   src = fetchFromGitHub {
     owner = "let-def";
     repo = "texpresso";
-    tag = "v${finalAttrs.version}";
-    hash = "sha256-d+wNQIysn3hdTQnHN9MJbFOIhJQ0ml6PoeuwsryntTI=";
+    rev = "96f008c94ece067fac8e896d0ab1808c948a4dd3";
+    hash = "sha256-ew7n3Sp4uYLv5jijRW2rRM9s63TQCeFgKXmmBXdYjx4=";
   };
 
   postPatch = ''
     substituteInPlace Makefile \
       --replace-fail "CC=gcc" "CC=${stdenv.cc.targetPrefix}cc" \
       --replace-fail "LDCC=g++" "LDCC=${stdenv.cc.targetPrefix}c++"
+    substituteInPlace src/engine/Makefile \
+      --replace-fail "_CC?=gcc" "_CC?=${stdenv.cc.targetPrefix}cc" \
+      --replace-fail "_LD?=g++" "_LD?=${stdenv.cc.targetPrefix}c++" \
+      --replace-fail "_CXX?=g++" "_CXX?=${stdenv.cc.targetPrefix}c++"
   '';
 
   strictDeps = true;
 
   nativeBuildInputs = [
     makeWrapper
+    pkg-config
+    # Especially for Darwin builds, we pretend we are Linux to avoid upstream's
+    # makefiles from using brew.
+    (writeShellScriptBin "uname" "echo Linux")
   ];
 
   buildInputs = [
+    fontconfig
     freetype
-    gumbo
     harfbuzz
+    icu
     jbig2dec
     libjpeg
     mupdf
-    openjpeg
-    re2c
     SDL2
   ];
 
   buildFlags = [
     "texpresso"
+    "texpresso-xetex"
   ];
 
   env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
@@ -70,27 +75,10 @@ stdenv.mkDerivation (finalAttrs: {
   installPhase = ''
     runHook preInstall
     install -D -t "$out/bin/" "build/texpresso"
+    install -D -t "$out/bin/" "build/texpresso-xetex"
     runHook postInstall
   '';
 
-  # needs to have texpresso-tonic on its path
-  postInstall = ''
-    wrapProgram $out/bin/texpresso \
-      --prefix PATH : ${lib.makeBinPath [ finalAttrs.finalPackage.passthru.tectonic ]}
-  '';
-
-  passthru = {
-    tectonic = callPackage ./tectonic.nix { };
-    updateScript = writeScript "update-texpresso" ''
-      #!/usr/bin/env nix-shell
-      #!nix-shell -i bash -p curl jq nix-update
-
-      tectonic_version="$(curl -s "https://api.github.com/repos/let-def/texpresso/contents/tectonic" | jq -r '.sha')"
-      nix-update texpresso
-      nix-update --version=branch=$tectonic_version texpresso.tectonic
-    '';
-  };
-
   meta = {
     inherit (finalAttrs.src.meta) homepage;
     description = "Live rendering and error reporting for LaTeX";
diff --git a/pkgs/by-name/te/texpresso/tectonic.nix b/pkgs/by-name/te/texpresso/tectonic.nix
deleted file mode 100644
index fe04d15191d7..000000000000
--- a/pkgs/by-name/te/texpresso/tectonic.nix
+++ /dev/null
@@ -1,42 +0,0 @@
-{
-  tectonic-unwrapped,
-  fetchFromGitHub,
-  rustPlatform,
-}:
-
-tectonic-unwrapped.overrideAttrs (
-  finalAttrs: prevAttrs: {
-    pname = "texpresso-tonic";
-    version = "0.15.0-unstable-2024-04-19";
-    src = fetchFromGitHub {
-      owner = "let-def";
-      repo = "tectonic";
-      rev = "b38cb3b2529bba947d520ac29fbb7873409bd270";
-      hash = "sha256-ap7fEPHsASAphIQkjcvk1CC7egTdxaUh7IpSS5os4W8=";
-      fetchSubmodules = true;
-    };
-
-    cargoHash = "sha256-mqhbIv5r/5EDRDfP2BymXv9se2NCKxzRGqNqwqbD9A0=";
-    # rebuild cargoDeps by hand because `.overrideAttrs cargoHash`
-    # does not reconstruct cargoDeps (a known limitation):
-    cargoDeps = rustPlatform.fetchCargoVendor {
-      inherit (finalAttrs) src;
-      name = "${finalAttrs.pname}-${finalAttrs.version}";
-      hash = finalAttrs.cargoHash;
-      patches = finalAttrs.cargoPatches;
-    };
-    # binary has a different name, bundled tests won't work
-    doCheck = false;
-    postInstall = ''
-      ${prevAttrs.postInstall or ""}
-
-      # Remove the broken `nextonic` symlink
-      # It points to `tectonic`, which doesn't exist because the exe is
-      # renamed to texpresso-tonic
-      rm $out/bin/nextonic
-    '';
-    meta = prevAttrs.meta // {
-      mainProgram = "texpresso-tonic";
-    };
-  }
-)