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feat(buildGo): Add x_defs support

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Vincent Ambo 2019-11-25 15:34:59 +00:00
parent 43f91c44bd
commit 580bd88622
1 changed files with 9 additions and 4 deletions
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13
overrides/buildGo.nix
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@ -1,3 +1,6 @@
# Copyright 2019 Google LLC.
# SPDX-License-Identifier: Apache-2.0
#
# buildGo provides Nix functions to build Go packages in the style of Bazel's # buildGo provides Nix functions to build Go packages in the style of Bazel's
# rules_go. # rules_go.
# #
@ -5,7 +8,7 @@
# TODO(tazjin): Refactor to include /golang/protobuf/descriptor in goProto deps # TODO(tazjin): Refactor to include /golang/protobuf/descriptor in goProto deps
# TODO(tazjin): Find a way to expose documentation (esp. for generated stuff) # TODO(tazjin): Find a way to expose documentation (esp. for generated stuff)
{ pkgs, ... }@args: { pkgs, ... }:
let let
inherit (builtins) inherit (builtins)
@ -19,7 +22,7 @@ let
replaceStrings replaceStrings
toPath; toPath;
inherit (pkgs) bash lib go runCommand fetchFromGitHub protobuf; inherit (pkgs) lib go runCommand fetchFromGitHub protobuf;
# Helpers for low-level Go compiler invocations # Helpers for low-level Go compiler invocations
spaceOut = lib.concatStringsSep " "; spaceOut = lib.concatStringsSep " ";
@ -44,15 +47,17 @@ let
allDeps = deps: lib.unique (lib.flatten (deps ++ (map (d: d.goDeps) deps))); allDeps = deps: lib.unique (lib.flatten (deps ++ (map (d: d.goDeps) deps)));
xFlags = x_defs: spaceOut (map (k: "-X ${k}=${x_defs."${k}"}") (attrNames x_defs));
# High-level build functions # High-level build functions
# Build a Go program out of the specified files and dependencies. # Build a Go program out of the specified files and dependencies.
program = { name, srcs, deps ? [] }: program = { name, srcs, deps ? [], x_defs ? {} }:
let uniqueDeps = allDeps deps; let uniqueDeps = allDeps deps;
in runCommand name {} '' in runCommand name {} ''
${go}/bin/go tool compile -o ${name}.a -trimpath=$PWD -trimpath=${go} ${includeSources uniqueDeps} ${spaceOut srcs} ${go}/bin/go tool compile -o ${name}.a -trimpath=$PWD -trimpath=${go} ${includeSources uniqueDeps} ${spaceOut srcs}
mkdir -p $out/bin mkdir -p $out/bin
${go}/bin/go tool link -o $out/bin/${name} -buildid nix ${includeLibs uniqueDeps} ${name}.a ${go}/bin/go tool link -o $out/bin/${name} -buildid nix ${xFlags x_defs} ${includeLibs uniqueDeps} ${name}.a
''; '';
# Build a Go library assembled out of the specified files. # Build a Go library assembled out of the specified files.