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feat(buildGo): Add 'overrideGo' argument overriding function

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This makes it possible to override arguments to the Go builders
downstream in the style of `overrideAttrs` from standard nixpkgs
derivations.

For example, given a Nix value `foo` that builds a binary called `foo`
the name of this binary could be changed and a new dependency on
`somelib` added like so:

    foo.overrideGo(old: {
      name = "bar";
      deps = old.deps ++ [ somelib ];
    })
This commit is contained in:
Vincent Ambo 2019-12-09 00:51:27 +00:00 committed by Vincent Ambo
parent 28e587b348
commit 6a526620e2
1 changed files with 14 additions and 2 deletions
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16
buildGo.nix
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@ -48,6 +48,13 @@ let
pathToName = p: replaceStrings ["/"] ["_"] (toString p);
# Add an `overrideGo` attribute to a function result that works
# similar to `overrideAttrs`, but is used specifically for the
# arguments passed to Go builders.
makeOverridable = f: orig: (f orig) // {
overrideGo = new: makeOverridable f (orig // (new orig));
};
# High-level build functions
# Build a Go program out of the specified files and dependencies.
@ -130,6 +137,11 @@ let
inherit external;
};
in {
# Only the high-level builder functions are exposed
inherit program package proto grpc external;
# Only the high-level builder functions are exposed, but made
# overrideable.
program = makeOverridable program;
package = makeOverridable package;
proto = makeOverridable proto;
grpc = makeOverridable grpc;
external = makeOverridable external;
}