Add nic_bus

default.nix

@@ -8,7 +8,9 @@ let
     with self; {
       depot = callPackage ./depot { };
       dhallPackages = super.dhallPackages // (callPackage ./dhall { });
-      genode = callPackage ./upstream { };
+      genode = (callPackage ./upstream { } // {
+        nic_bus = callPackage ./pkgs/nic_bus { };
+      });
       nova = callPackage ./NOVA { };
       solo5 = callPackage ./solo5 { };
     };

pkgs/nic_bus/default.nix

@@ -0,0 +1,71 @@
+# SPDX-FileCopyrightText: Emery Hemingway
+#
+# SPDX-License-Identifier: LicenseRef-Hippocratic-1.1
+
+{ stdenv, buildPackages, fetchgit, genode, pkgconfig, tup }:
+
+let
+  tupArch = with stdenv.targetPlatform;
+    if isAarch32 then "arm" else
+    if isAarch64 then "arm64" else
+    if isx86_32 then "i386" else
+    if isx86_64 then "x86_64" else
+    abort "unhandled targetPlatform";
+
+  toTupConfig = attrs:
+    with builtins;
+    let op = config: name: "${config}CONFIG_${name}=${getAttr name attrs} ";
+    in foldl' op "" (attrNames attrs);
+
+in stdenv.mkDerivation rec {
+  name = "nic_bus";
+  version = "1.0";
+  src = fetchgit {
+    url = "https://git.sr.ht/~ehmry/nic_bus";
+    rev = "76881b4fbb99e9a995d1f35a33529ff8f38c89bc";
+    sha256 = "08fcbfnlg0ljbgv95yd5q70c7xa0sg2k0njv4ygancs7d7f7q4bb";
+  };
+
+  nativeBuildInputs = [ pkgconfig tup ];
+
+  buildInputs = [ genode.base genode.os ];
+
+  tupConfig = toTupConfig {
+    TUP_ARCH = tupArch;
+    VERSION = version;
+  };
+
+  configurePhase = ''
+    cp -v ${genode.base.src}/Tuprules.tup .
+
+    # Configure Tup
+    echo $tupConfig | tr ' CONFIG_' '\nCONFIG_' > tup.config
+    echo CONFIG_NIX_OUTPUTS_OUT=$out >> tup.config
+    echo CONFIG_NIX_OUTPUTS_DEV=$dev >> tup.config
+
+    # Scan repository and generate script
+    tup init
+    tup generate buildPhase.sh
+
+    # Redirect artifacts to Nix store
+    mkdir -p $out
+    ln -s $out out
+  '';
+
+  buildPhase = ''
+    test -d repos/$repo/src/ld && cp -rv repos/$repo/src/ld $dev/
+    pushd .
+    set -v
+    source buildPhase.sh
+    set +v
+    popd
+  '';
+
+  dontInstall = true;
+
+  meta = with stdenv.lib; {
+    license = licenses.agpl3;
+    maintainers = [ maintainers.ehmry ];
+  };
+
+}