From 7f8d362a8ed45f7a32dea611ab72f3504cb968b9 Mon Sep 17 00:00:00 2001
From: Jack Leightcap <jack@leightcap.com>
Date: Mon, 25 Sep 2023 18:24:05 -0400
Subject: [PATCH] fasm: init at 0.0.2

Signed-off-by: Jack Leightcap <jack@leightcap.com>
---
 flake.nix            |  9 ++++
 nix/fasm/default.nix | 98 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 107 insertions(+)
 create mode 100644 nix/fasm/default.nix

diff --git a/flake.nix b/flake.nix
index ca4a376..adf8a06 100644
--- a/flake.nix
+++ b/flake.nix
@@ -71,6 +71,15 @@
 
           prjxray = callPackage ./nix/prjxray.nix { };
 
+          fasm = with pkgs;
+            with python3Packages;
+            callPackage ./nix/fasm {
+              # NOTE(jleightcap): calling this package here is clucky.
+              # contorted structure here to make the `nix/fasm` directory be
+              # drop-in to upstream python-modules in nixpkgs.
+              inherit buildPythonPackage pythonOlder textx cython fetchpatch;
+            };
+
           nextpnr-xilinx-chipdb = {
             artix7 = callPackage ./nix/nextpnr-xilinx-chipdb.nix {
               backend = "artix7";
diff --git a/nix/fasm/default.nix b/nix/fasm/default.nix
new file mode 100644
index 0000000..4d27b1c
--- /dev/null
+++ b/nix/fasm/default.nix
@@ -0,0 +1,98 @@
+# https://github.com/NixOS/nixpkgs/blob/master/doc/languages-frameworks/python.section.md
+# https://aur.archlinux.org/packages/python-fasm-git
+
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, cmake
+, textx
+, cython
+, fetchpatch
+}:
+
+let
+  fetchPatchFromAur = { name, sha256 }:
+    fetchpatch {
+      inherit name sha256;
+      url = "https://aur.archlinux.org/cgit/aur.git/plain/${name}?h=python-fasm-git";
+    };
+in
+buildPythonPackage rec {
+  name = "fasm";
+  version = "0.0.2.r98.g9a73d70";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    inherit name;
+    owner = "chipsalliance";
+    repo = "fasm";
+    rev = "9a73d70c53fbc7e9202191120836a961c97c0868";
+    hash = "sha256-oC6vSpI9u8gEA2C85k00WdXzpH5GxeqtfNqqMduW5Jg=";
+  };
+
+  patches = map fetchPatchFromAur [
+    {
+      name = "0001-cmake-install-parse_fasm.so.patch";
+      sha256 = "sha256-ZEq/hTXjCIkVkWhgCYWtRe3wftdYMNwhNC4KNnBI2Dc=";
+    }
+    {
+      name = "0002-cmake-install-tags.py-properly.patch";
+      sha256 = "sha256-OK5nXWsAzKK5ZreUCZy0maqWKrB0rpv8c2tA8zTE4U4=";
+    }
+    {
+      name = "0003-fix-setup.py-compute-install-directory-before-outsid.patch";
+      sha256 = "sha256-XBbEHi4uXiS5rCl+0aiTkQ0q/+npgyr8zHabRMMiybI=";
+    }
+    {
+      name = "0004-setup.py-don-t-build-everything-twice.patch";
+      sha256 = "sha256-TI8Ku+UIgnMNU4L4W09cSA0BC7kohXn+qGYki/EkQWA=";
+    }
+    {
+      name = "0005-cmake-allow-overriding-ANTLR_EXECUTABLE.patch";
+      sha256 = "sha256-11HnqV7nUDL3IztA9B2KnsEy1JaGzOOea269tmaLIzs=";
+    }
+    {
+      name = "0006-cmake-explicitly-link-test-with-gtest.patch";
+      sha256 = "sha256-hy0sL5INTPkkA8fdPxrw4zQA5KsSfhRIrT1HuP1BrVI=";
+    }
+    {
+      name = "0007-ANTLR4-4.10-compatibility.patch";
+      sha256 = "sha256-ZctDyp+a0m/Yr6b/Z42DBQvrKwF95GRrYaCbsFBtEz0=";
+    }
+    {
+      name = "0008-cmake-use-native-gtest.patch";
+      sha256 = "sha256-dYIjVrq+awCPblp6fV/VaTRsef7ibib+qP0ioh3dZ14=";
+    }
+    {
+      name = "0009-Use-cmake-directly-instead-of-letting-setup.py-try-t.patch";
+      sha256 = "sha256-/Ay+XjTE7MPcQg5yeo7zuKE2T/tE/P1sIMxgRYeSWNI=";
+    }
+  ];
+
+
+  nativeBuildInputs = [
+    cmake
+    cython
+  ];
+
+  propagatedBuildInputs = [
+    textx
+  ];
+
+  dontUseCmakeConfigure = true;
+
+  # Broken upstream.
+  # https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=python-fasm-git#n76
+  doCheck = false;
+
+  meta = with lib; {
+    changelog = "https://github.com/chipsalliance/fasm/releases/tag/${version}";
+    homepage = "https://github.com/chipsalliance/fasm/";
+    description = "FPGA Assembly (FASM) Parser and Generator";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ jleightcap hansfbaier ];
+  };
+}