broken_errcheck.bzl

load("@io_bazel_rules_go//go:def.bzl", "go_context", "go_path", "go_rule")

load("@io_bazel_rules_go//go/private:providers.bzl", "GoLibrary", "GoPath")

_ERRCHECK_TOOL = "@com_github_kisielk_errcheck//:errcheck"
        
def _errcheck_sh_impl(ctx):
    go = go_context(ctx)
    gopath = ctx.attr.gopath_dep[GoPath].gopath
    print("GOPATH IS ", gopath)
    stdlib = go.stdlib

    inputs = [ctx.file.errcheck_tool, go.go] + ctx.files.gopath_dep + stdlib.files + go.sdk_files
    args = [ctx.attr.library[GoLibrary].importpath]

    # We can use the go binary from the stdlib for most of the environment
    # variables, but our GOPATH is specific to the library target we were given.
    ctx.actions.write(
        output = ctx.outputs.out_file,
        is_executable = True,
        content = """#!/bin/bash
           echo "PWD IS $PWD"
           export GOROOT=$PWD/../go_sdk &&
           echo "GOROOT is $GOROOT" &&
           export PATH=$GOROOT/bin:$PWD/{godir}:$PATH &&
           export GOPATH=$PWD/{gopath} &&
           {errcheck} {args}
        """.format(
            godir=go.go.short_path,
            gopath=gopath,
            errcheck=ctx.file.errcheck_tool.short_path,
            args = " ".join(args),
        )
    )

    return [DefaultInfo(executable=ctx.outputs.out_file, runfiles=ctx.runfiles(files=inputs, collect_data = True))]

_errcheck_sh = go_rule(
    _errcheck_sh_impl,
    executable = True,
    attrs = {
        "library": attr.label(
            doc = "The target the Go library is at to look for the interfaces in. When this is set and source is not set, errcheck will use its reflect code to generate the mocks. If source is set, its dependencies will be included in the GOPATH that errcheck will be run in.",
            providers = [GoLibrary],
            mandatory = True,
        ),

        "gopath_dep": attr.label(
            doc = "The go_path label to use to create the GOPATH for the given library. Will be set correctly by the errcheck macro, so you don't need to set it.",
            providers=[GoPath],
            cfg = "data",
            mandatory = True,
        ),

        "errcheck_tool": attr.label(
            doc = "The errcheck tool to run",
            default = Label(_ERRCHECK_TOOL),
            allow_single_file = True,
            executable = True,
            cfg = "host",
            mandatory = False,
        ),
    },
    outputs = {"out_file": "%{name}_errcheck.sh"},
)

def errcheck(name, library, **kwargs):
    gopath_name = name + "_errcheck_gopath"
    errcheck_tool = _ERRCHECK_TOOL
    if kwargs.get("errcheck_tool", None):
        errcheck_tool = kwargs["errcheck_tool"]
    go_path(
        name = gopath_name,
        deps = [library, errcheck_tool]
    )

    _errcheck_sh(
        name = name,
        library = library,
        gopath_dep = gopath_name,
        **kwargs
    )

cgo looking errors

/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/os/user/lookup.go:58:9: undeclared name: listGroups
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/os/user/lookup.go:11:41: undeclared name: current
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/os/user/lookup.go:32:9: undeclared name: lookupUser
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/os/user/lookup.go:41:9: undeclared name: lookupUserId
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/os/user/lookup.go:47:9: undeclared name: lookupGroup
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/os/user/lookup.go:53:9: undeclared name: lookupGroupId
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/net/lookup_unix.go:80:24: undeclared name: cgoLookupHost
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/net/lookup_unix.go:95:24: undeclared name: cgoLookupIP
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/net/lookup_unix.go:107:23: undeclared name: cgoLookupPort
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/net/lookup_unix.go:123:24: undeclared name: cgoLookupCNAME
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/net/lookup_unix.go:190:23: undeclared name: cgoLookupPTR
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/crypto/x509/cert_pool.go:38:9: undeclared name: loadSystemRoots
/private/var/tmp/_bazel_jmhodges/ee957dabdee1b1a9e1f2fe90369cf80f/execroot/founding/bazel-out/darwin-fastbuild/bin/go/svc/howsmyssl-billing/hberrcheck_errcheck.sh.runfiles/go_sdk/src/crypto/x509/root.go:21:32: undeclared name: loadSystemRoots
error: failed to check packages: could not type check: couldn't load packages due to errors: net, crypto/x509, os/user