Dmitry Ivankov 0f5783f80a bazel_4: init at 4.0.0 ... Bazel 4 is going to be a long term support release. Latest version in NixPkgs so far was 3.3.1 There's a need for more recent version https://github.com/NixOS/nixpkgs/issues/97497 All versions from 3.5.0 to 3.7.1 had some reproducibility issues as noted in issue above, but there also seems to be a working PR for 3.7.1 now at https://github.com/NixOS/nixpkgs/pull/105439 Notable changes from bazel_3 setup: - put python to default bash path For autodetecting python toolchain with strict action_env on and without this change bazel would fail to autodetect host python. There are some repos that define hermetic python toolchains, but they aren't easy to use yet. Also telling python paths to bazel isn't a 1-liner it seems: - action_env=PATH would affect cache - declaring toolchain via BUILD&WORKSPACE files is not per-user but more like per-repo and affects cache too Using python from nixpkgs shouldn't be too bad in the lack of simpler hermetic python toolchain options - bazel_4.updater is bazel on `bazel query` to support new constructs in WORKSPACE (load of vars, transitive load etc). This is more robust but requires bazel to run the updater, using bazel_3 for now. This is only needed to bump package version, doesn't introduce bazel_4 build dependency on bazel_3 https://blog.bazel.build/2020/11/10/bazel-4.0-announce.html https://blog.bazel.build/2020/11/10/long-term-support-release.html https://github.com/bazelbuild/bazel/issues/12455 https://github.com/bazelbuild/bazel/releases/tag/4.0.0 https://blog.bazel.build/2021/01/19/bazel-4-0.html		2021-02-04 20:24:54 +01:00
..
default.nix
src-deps.json
update-srcDeps.py