conda: add binutils.nix

artiq-fast/conda/binutils.nix

@@ -0,0 +1,45 @@
+{ pkgs, version, src, target }:
+
+let
+  fake-src = pkgs.runCommand "conda-fake-source-binutils-${target}" { }
+    ''
+    mkdir -p $out/fake-conda;
+
+    cat << EOF > $out/fake-conda/meta.yaml
+    package:
+      name: binutils-${target}
+      version: ${version}
+
+    source:
+      url: ${src}
+
+    # Note: libiconv is also a build dependency, but the conda garbage won't find it
+    # if installed from a file (even if it shows up in conda list), as is the case 
+    # when using this script.
+    requirements:
+      run:
+        - libiconv
+
+    EOF
+
+    cat << EOF > $out/fake-conda/build.sh
+    #!/bin/bash
+    set -e
+
+    mkdir build
+    cd build
+    ../configure --target=${target} --prefix=\$PREFIX
+    make
+    make install
+
+    # this is a copy of prefixed executables
+    rm -rf $PREFIX/${target}
+
+    EOF
+    chmod 755 $out/fake-conda/build.sh
+    '';
+in
+  import ./build.nix { inherit pkgs; } {
+    name = "conda-binutils-${target}";
+    src = fake-src;
+  }