Add devShell to flake.nix. Build every available stable architecture. Remove shell.nix. Add nix github action

.github/workflows/nix.yml

@@ -0,0 +1,13 @@
+name: "build nix flake"
+on:
+  pull_request:
+  push:
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+       submodules: true
+    - uses: cachix/install-nix-action@v25
+    - run: nix build '.?submodules=1'

flake.nix

@@ -39,11 +39,17 @@
                 myPythonPackages.apycula
                 pkgs.icestorm
                 pkgs.trellis
+                pkgs.tcl
+                pkgs.zlib
+                pkgs.capnproto
+                pkgs.lzma
+                pkgs.tk
+                pkgs.wget
               ] ++ (pkgs.lib.optional enableGui pkgs.qt6.qtbase)
               ++ (pkgs.lib.optional pkgs.stdenv.cc.isClang pkgs.llvmPackages.openmp);
 
               cmakeFlags = [
-              "-DARCH=generic;ice40;ecp5;gowin"
+                "-DARCH=all"
                 "-DBUILD_TESTS=ON"
                 "-DICESTORM_INSTALL_PREFIX=${pkgs.icestorm}"
                 "-DTRELLIS_INSTALL_PREFIX=${pkgs.trellis}"
@@ -59,11 +65,15 @@
                 homepage = "https://github.com/yosyshq/nextpnr";
                 license = licenses.isc;
                 platforms = platforms.all;
-              maintainers = with maintainers; [ thoughtpolice emily ];
+                maintainers = with maintainers; [ ];
               };
             };
           };
 
           packages.default = self.packages.${system}.nextpnr;
+
+          devShell = pkgs.mkShell {
+            buildInputs = [ self.packages.${system}.default ];
+          };
         });
 }

shell.nix

@@ -1,48 +0,0 @@
-{ pkgs ? import (fetchTarball https://github.com/NixOS/nixpkgs/archive/23.05.tar.gz) {} }:
-
-let
-  pythonPkgs = pkgs.python3Packages;
-  boostPython = pkgs.boost.override { python = pythonPkgs.python; enablePython = true; };
-  vscode = pkgs.vscode-with-extensions.override {
-    vscodeExtensions = with pkgs.vscode-extensions; [
-      bbenoist.nix
-      ms-vscode.cpptools
-      ms-vscode.cmake-tools
-      twxs.cmake
-      usernamehw.errorlens
-      llvm-vs-code-extensions.vscode-clangd
-    ] ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace [
-      {
-        name = "VerilogHDL";
-        publisher = "mshr-h";
-        version = "1.11.4";
-        sha256 = "sha256-4JY0eaN2IkwHv8u8X6ejDXk6vT1qB4vJjWdIy8b/jj4=";
-      }
-    ];
-  };
-in pkgs.mkShell {
-  buildInputs = with pkgs; [
-    cmake
-    eigen
-    boostPython
-    pythonPkgs.python
-    pythonPkgs.apycula
-    libsForQt5.qt5.qtbase
-    llvmPackages.openmp
-    icestorm
-    trellis
-    mold
-    yosys
-    clang
-    valgrind
-    cling
-    gdb
-    vscode
-  ];
-
-  shellHook = ''
-    export TRELLIS_INSTALL_PREFIX=${pkgs.trellis}
-    export ICESTORM_INSTALL_PREFIX=${pkgs.icestorm}
-    export QT_QPA_PLATFORM_PLUGIN_PATH="${pkgs.libsForQt5.qt5.qtbase.bin}/lib/qt-${pkgs.libsForQt5.qt5.qtbase.version}/plugins";
-  '';
-}