# 1.0.0-alpha.1 (2023-11-15)

### Bug Fixes

* correct executable permissions of repository files ([7e3b5863](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/7e3b58635c7c375269e1643195f0a829ec59dcf1))
* **rules_toolchain:** add `amd64`/`arm64` aliases ([332bb9b8](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/332bb9b839176d7ad211f7e2f499b80716d37500))
* **rules_toolchain:** add `no-remote` to local binary symlinks ([254a3d5d](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/254a3d5d9c78772ffc681f7e5ea099e754bbb3b9))
* **rules_toolchain:** add `x86_64`/`aarch64` CPU targets ([bed57561](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/bed5756126fa64764d80a61cb78afada41d09de0))
* **rules_toolchain:** add locally detect OS version to constraints ([a1eae556](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/a1eae55624fb1b2253a3c254943dddb3a98ddc3b))
* **rules_toolchain:** all multiple files to `symlink` ([843f6cc7](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/843f6cc729a213a6d367f54bd11d9d8f87daf842))
* **rules_toolchain:** correct GNU libc check ([1689f920](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/1689f9201b70e6f9a22bebb879d67175421d51a3))
* **rules_toolchain:** do a better job of processing `/etc/release` ([561463ab](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/561463ab90b43341d4f0b66145a3816d64231c41))
* **rules_toolchain:** local binary not found error ([eb0dcd8b](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/eb0dcd8b3ea19c7a414486a6a1e00935ebee6a32))
* **rules_toolchain:** only expose unversioned triplets ([6f607646](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/6f6076467613bba30c3bdefe92a7450d266c60c4))
* **rules_toolchain:** respect `target` attribute ([b5773053](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/b577305399516eaf21d341cf7e687a25ef20ed68))
* **rules_toolchain:** simplify Bazel run commands ([cb5ae502](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/cb5ae5022da29042416443699c82a65d3fdfd955))
* **rules_toolchain:** support no legacy runfiles ([fdc609e4](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/fdc609e4aeda92fadf8c1154b0f012556cdfb133))

### Features

* add a `resolved` target to local binary repositories ([7ad98062](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/7ad98062778c17c7b143a2a366b18361ba950d09))
* **rules_toolchain:** add `DataInfo.executable` ([6cc16f24](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/6cc16f24832cd3b1948929d52fb738d76be90f2c))
* **rules_toolchain:** add `echo` toolchain end-to-end test ([9309dd1a](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/9309dd1acd992fe6be15faaef180a43febcc94c0))
* **rules_toolchain:** add `host` platform and constraint ([9f8ae2c7](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/9f8ae2c728914d7d8adbed93c75338e962ffdd2f))
* **rules_toolchain:** add `local.select` extension ([97b4386f](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/97b4386fdbc416ba7b2b701ac6a56f1ed9abf187))
* **rules_toolchain:** add `toolchain_symlink_path` rule ([f03782a0](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/f03782a088727dba597915d65aa83ed8830eb87b))
* **rules_toolchain:** add `toolchain_symlink_target` rule ([f8987a49](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/f8987a4989363331142df10bce7b6269456da14f))
* **rules_toolchain:** add `toolchain_test` rule ([550b3b1f](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/550b3b1fc183bed745366320ba26632ecb055f9f))
* **rules_toolchain:** add `uname` release detection ([23260b3b](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/23260b3baa8d6e157390e6656dea2309454017cd))
* **rules_toolchain:** add customising the basename for symlink rules ([9ad523df](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/9ad523dfe0e31f0c5bdf17163741befca139e519))
* **rules_toolchain:** add extension for finding local binaries ([2ed07d3b](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/2ed07d3b5ec30b7fceac760c6249d6a9f35bc15d))
* **rules_toolchain:** add host triplet detection ([0e2e2116](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/0e2e211668df6fc8af0ccb0fe1e6bf4ac25566c4))
* **rules_toolchain:** add local toolchain information rule ([d6b279dc](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/d6b279dc9aeb5522746d944b3ee59ae6ae3f067d))
* **rules_toolchain:** add triplet constraints ([52205111](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/522051114a772fb7a878e5f6df44446c944dcba6))
* **rules_toolchain:** add triplet platforms ([14aba1de](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/14aba1de9d9c97ab71b49c2a832960ed64640d7e))
* **rules_toolchain:** add triplet targets and information ([61871330](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/6187133091be4f6f6fc5b24444d380033ba244eb))
* **rules_toolchain:** expose `glibc` `VERSIONS` collection ([5db2957e](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/5db2957e727342dfc00e000c34310b1a08a1f088))
* **rules_toolchain:** generate LTS version variants ([6deceb46](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/6deceb4619a4a0fd04565d2403ac60297eeae931))
* **rules_toolchain:** generate versioned triplets ([63c94365](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/63c943658fdce7fbb7a151374c60bdb615261da2))
* **rules_toolchain:** test anything protocol for testing ([191ce97e](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/191ce97e2c613e849f803dc1c7ff958f0ff9f021))

This removes the need for a custom `resolved` rule for every toolchain.

Upgrade path is to add the `toolchain_type` to the local repository
rule in `MODULE.bazel` and change the `resolved` target to an alias.

A `toolchain_resolved` repository rule is added as well for toolchains
that do not use local binaries.

This patch hugely simplifies the creation of toolchains downstream.

The default is to set files as executable in repository rules.

We often do not want that.

Especially disabling legacy runfiles.

`use_repo_rule` is available in `6.4.0` and above.

It _hugely_ simplifies what we want to do.

That should be the new minimum version for our rulesets.

As of writing, `6.4.0` is not released. The release candidates do not have
the `use_repo_rule` added, yet. Most rules use `last_rc` Bazel version.

`visibility` is available in 6.0+.

Sebastian Birunt authored Oct 05, 2023 and Matthew Clarkson committed Nov 15, 2023

Adds an tag class that can select a repository based on the current local machine triplet.

For some reason, the `triplet:test` target creates all the Posix shell
scripts for each triplet.

We need a more efficient `triplet` rule implementation.

We also need to figure out why every single triplet is getting resolved.

It is almost impossible to correctly transfer all the local files necessary
for a local binary to the remote service.

For safety, constraint all local toolchains to run on the local client until we
have more time to validate that local toolchains work remotely.

This is certainly possible: C/C++ toolchain define all the local files needed
for remote execution.

We will need to expose the `data` attribute through so that arbitary files can
be globbed and sent along with the binary.

Bazel has conflicting nomenclature here.

They use host machine, in particular `--host_platform` but they also use
local machine when refering to remote execution.

It makes sense to align on one, local seems sensible as that works in both
non-remote-execution and remote-execution conversations.

Allows easy testing of a toolchain binary.

This allows rules that need to propagate multiple files.

`sh_binary` is one example of this.

_Technically_, this should be possible by propagating runfiles
but the toolchains are needed at build time, not runtime.

Importantly, includes the `executable = True` keyword.

Allows usage of `--host_platform=@rules_toolchain//toolchain/platform:host`
to get `libc` aware host constraints.

They are not _real_ constraints but `config_settings` which
can be used in a `select` to switch on the triplet.