daml/bazel_tools/ghc_dwarf.bzl

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# Copyright (c) 2020 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
# This repository rule exists so that we can switch the GHC attribute
# name in `WORKSPACE` as we cannot use `select` theer.
_ghc_dwarf_bzl_template = """
enable_ghc_dwarf = {GHC_DWARF}
"""
def _ghc_dwarf_impl(repository_ctx):
enable_dwarf = repository_ctx.os.environ.get("GHC_DWARF", "") != ""
substitutions = {
"GHC_DWARF": enable_dwarf,
}
repository_ctx.file(
"ghc_dwarf.bzl",
_ghc_dwarf_bzl_template.format(**substitutions),
False,
)
repository_ctx.file(
"BUILD",
"",
False,
)
ghc_dwarf = repository_rule(
implementation = _ghc_dwarf_impl,
local = True,
)