Revert "typst-bot: drop"

This reverts commit 812a974c75.

nix/packages/by-name/typst-bot/package.nix

@@ -0,0 +1,39 @@
+{
+  rustPlatform,
+  fetchFromGitHub,
+  lib,
+}: let
+  rev = "6be5470fcb19e857f76ede9a7f0c96cac63e3abc";
+in
+  rustPlatform.buildRustPackage rec {
+    pname = "typst-bot";
+    version = lib.substring 0 8 rev;
+
+    src = fetchFromGitHub {
+      owner = "mattfbacon";
+      repo = "typst-bot";
+      inherit rev;
+      hash = "sha256-G3tcyFiHeVH77YT2NeIXS/U1GvqGJBw8o26AlBUc4ok=";
+    };
+
+    preBuild = ''
+      # Don't use the upstream way of embedding the git rev
+      echo 'fn main() { println!("cargo:rustc-env=BUILD_SHA=${rev}"); }' > crates/bot/build.rs
+
+      # Patch the fonts with src
+      # FIXME: is this the right way to patch
+      substituteInPlace crates/worker/src/sandbox.rs --replace-fail 'read_dir("fonts")' 'read_dir("${src}/fonts")'
+
+      # Patch the command calling the worker by name.
+      substituteInPlace crates/bot/src/worker.rs --replace-fail 'Command::new("./worker")' 'Command::new("worker")'
+    '';
+
+    cargoBuildFlags = ["--workspace"];
+
+    cargoLock = {
+      lockFile = "${src}/Cargo.lock";
+      outputHashes = {
+        "poise-0.6.1" = "sha256-AZtF5P7E5xzHJcNdc1k61P2Rr8vIt+oun9vFYSr0nSc=";
+      };
+    };
+  }