newelle: ship on moby, hack in cross compilation

hosts/common/programs/assorted.nix

@@ -350,6 +350,7 @@ in
       "mpv"
       "networkmanagerapplet"
       # "ntfy-sh"  # notification service
+      "newelle"  # ollama/LLM client
       "newsflash"  # RSS viewer
       "papers"  # PDF viewer
       "pavucontrol"
@@ -433,7 +434,6 @@ in
       # "makemkv"  # x86-only
       # "monero-gui"  # x86-only
       "mumble"
-      "newelle"  # ollama/LLM client
       # "nheko"  # Matrix chat client
       "nicotine-plus"  # soulseek client
       # "obsidian"

hosts/common/programs/newelle.nix

@@ -3,10 +3,45 @@
 #   to decrease pathologies
 # - intelligent formatting of model output (e.g. latex, markdown)
 #
+# shortcomings (as of 2025-07-23):
+# - poorly adapts to very narrow screens.
+#   - usable, but e.g. the "post" button (and the window close button) is cut off
+# - closing the UI does not fully exit the process
+#   - presumably it's sitting in the background, waiting to be dbus-activated
+#
 # TODO: configure ollama connection details statically
-{ ... }:
+{ pkgs, ... }:
 {
   sane.programs.newelle = {
+    packageUnwrapped = (pkgs.newelle.override {
+      python3Packages = pkgs.python3Packages // {
+        # XXX(2025-07-23): these don't cross compile; disable them
+        # pydub drags in opencv, but only used for text-to-speech (and only for Newelle <= 0.9.8)
+        pydub = null;
+        # speechrecognition has a build error due to python3Packages.standard-aifc > python3Packages.audioop
+        speechrecognition = null;
+        # both of these are blocked on `python3Packages.spacy`
+        # llama-index-* is imported, lazily, from handlers/rag/llamaindex_handler.py
+        llama-index-core = null;
+        llama-index-readers-file = null;
+      };
+    }).overridePythonAttrs (upstream: {
+      postPatch = (upstream.postPatch or "") + ''
+        # patch out the toplevel speech_recognition imports so that the app
+        # is launchable without it.
+        # actually trying to use speech recognition will (likely) manifest as a runtime error, instead.
+        find . -exec sed -i 's/import speech_recognition/# import speech_recognition/g' '{}' ';'
+
+        # turn pydub (text-to-speech) into a runtime error.
+        # N.B.: remove once Newelle is upgraded past 0.9.8:
+        # future versions do not use pydub for tts (but ffplay instead)
+        substituteInPlace src/handlers/tts/tts.py \
+          --replace-fail 'from pydub' '# from pydub'
+      '';
+    });
+
+    buildCost = 2;  #< liable to break cross during updates; not important enough to block deploy over
+
     sandbox.net = "all";  # maybe only needs wireguard, actually
     sandbox.whitelistWayland = true;
     sandbox.mesaCacheDir = ".cache/Newelle/mesa";

overlays/cross.nix

@@ -588,6 +588,25 @@ in with final; {
     cargo = crossCargo;
   };
 
+  # pythonPackagesExtensions = prev.pythonPackagesExtensions ++ [
+  #   (pyself: pysuper: {
+  #     # 2025/07/23: upstreaming is unblocked, but solution is untested.
+  #     # the references here are a result of the cython build process.
+  #     # cython is using the #include files from the build python, and leaving those paths in code comments.
+  #     # better solution is to get cython to use the HOST python??
+  #     #
+  #     # python3Packages.srsly is required by `newelle` program.
+  #     srsly = pysuper.srsly.overridePythonAttrs (upstream: {
+  #       nativeBuildInputs = (upstream.nativeBuildInputs or []) ++ [
+  #         removeReferencesTo
+  #       ];
+  #       postFixup = (upstream.postFixup or "") + ''
+  #         remove-references-to -t ${pyself.python.pythonOnBuildForHost} $out/${pyself.python.sitePackages}/srsly/msgpack/*.cpp
+  #       '';
+  #     });
+  #   })
+  # ];
+
   # qt6 = prev.qt6.overrideScope (self: super: {
   #   # qtbase = super.qtbase.overrideAttrs (upstream: {
   #   #   # cmakeFlags = upstream.cmakeFlags ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [

pkgs/by-name/nixpkgs-bootstrap/patches.nix

@@ -64,6 +64,13 @@ in
     hash = "sha256-609snDT1Ru69ZTWfzu4PnhY0pj3xghPr8w880j7JZ5k=";
   })
 
+  # (fetchpatch' {
+  #   # opencv used by alpaca, newelle
+  #   name = "opencv: fix cross compliation by patching protobuf";
+  #   prUrl = "https://github.com/NixOS/nixpkgs/pull/415591";
+  #   hash = "sha256-ZTTIw10Nh179JrAudSuC8FDTSW2CspYrRchMi+ODwww=";
+  # })
+
   # (fetchpatch' {
   #   # XXX(2025-01-06): patch does not produce valid binaries for cross
   #   name = "lua-language-server: fix cross compiling";