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feat(tools): add utility to generate swift toolchain dictionaries
Generating the toolchain dictionary currently requires downloading toolchains one by one and calculating their checksum, which is tedious and time consuming. We're adding a utility here that will do that automatically. The tool supports caching downloaded archives and can fetch release information from swift.org's API to generate the checksums dictionary format used by the build system. While we're at it, we're running that utility for the 2 latest releases (6.2.2 and 6.2.3) and adding them to the dict. Because that dictionary is probably gonna keep growing over time, we're also moving it in its own standalone file (swift_releases.bzl).
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4 files changed

+362
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‎swift/extensions.bzl‎

Lines changed: 4 additions & 22 deletions
Original file line numberDiff line numberDiff line change
@@ -17,6 +17,7 @@
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load("@bazel_features//:features.bzl", "bazel_features")
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load("//swift:repositories.bzl", "swift_rules_dependencies")
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load("//swift/internal:extensions/standalone_toolchain.bzl", _standalone_toolchain = "standalone_toolchain")
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load("//swift/internal:extensions/swift_releases.bzl", "SWIFT_RELEASES")
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load(
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"//swift/internal:extensions/toolchains.bzl",
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_toolchains_for_platform = "toolchains_for_platform",
@@ -36,25 +37,6 @@ def _non_module_deps_impl(module_ctx):
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non_module_deps = module_extension(implementation = _non_module_deps_impl)
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# This mapping is intended to map each version to its supported platforms and checksums
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_SWIFT_RELEASES = {
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"6.2.1": {
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"xcode": "4ca13d0abd364664d19facd75e23630c0884898bbcaf1920b45df288bdb86cb2",
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"amazonlinux2": "218fc55ba7224626fd25f8ca285b083fda020e3737146e2fe10b8ae9aaf2ae97",
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"amazonlinux2-aarch64": "00999039a82a81b1e9f3915eb2c78b63552fe727bcbfe9a2611628ac350287f2",
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"debian12": "d6405e4fb7f092cbb9973a892ce8410837b4335f67d95bf8607baef1f69939e4",
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"debian12-aarch64": "522d231bb332fe5da9648ca7811e8054721f05eccd1eefae491cf4a86eab4155",
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"fedora39": "ec78360dfa7817d7637f207b1ffb3a22164deb946c9a9f8c40ab8871856668e8",
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"fedora39-aarch64": "d8bc04e7e283e314d1b96adc55e1803dd01a0106dc0d0263e784a5c9f2a46d3b",
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"ubi9": "9a082c3efdeda2e65cbc7038d0c295b75fa48f360369b2538449fc665192da3e",
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"ubi9-aarch64": "47f109f1f63fa24df3659676bb1afac2fdd05c0954d4f00977da6a868dd31e66",
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"ubuntu22.04": "5ec23d4004f760fafdbb76c21e380d3bacef1824300427a458dc88c1c0bef381",
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"ubuntu22.04-aarch64": "ab5f3eb0349c575c38b96ed10e9a7ffa2741b0038285c12d56251a38749cadf0",
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"ubuntu24.04": "4022cb64faf7e2681c19f9b62a22fb7d9055db6194d9e4a4bef9107b6ce10946",
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"ubuntu24.04-aarch64": "3b70a3b23b9435c37112d96ee29aa70061e23059ef9c4d3cfa4951f49c4dfedb",
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},
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}
57-
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def _standalone_toolchain_impl(module_ctx):
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root_module = None
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for mod in module_ctx.modules:
@@ -77,13 +59,13 @@ def _standalone_toolchain_impl(module_ctx):
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if toolchain.swift_version_file:
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swift_version = module_ctx.read(toolchain.swift_version_file).strip()
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80-
if swift_version not in _SWIFT_RELEASES:
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if swift_version not in SWIFT_RELEASES:
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fail("Version `{}` is not supported by this version of rules_swift. Please choose one of: {}".format(
8264
swift_version,
83-
_SWIFT_RELEASES.keys(),
65+
SWIFT_RELEASES.keys(),
8466
))
8567

86-
for platform, sha256 in _SWIFT_RELEASES[swift_version].items():
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for platform, sha256 in SWIFT_RELEASES[swift_version].items():
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repository_name = toolchain.name + "_{}".format(platform)
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_standalone_toolchain(
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name = repository_name,

‎swift/internal/extensions/swift_releases.bzl‎

Lines changed: 67 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,67 @@
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"""Swift release version mappings.
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This module defines the SWIFT_RELEASES dictionary, which maps each Swift version
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to its supported platforms and their corresponding SHA256 checksums. This data is
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used to download and verify Swift toolchain releases for different platforms.
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The structure is:
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SWIFT_RELEASES = {
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"version": {
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"platform": "sha256_checksum",
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...
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},
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...
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}
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Supported platforms include various Linux distributions (amazonlinux2, debian12,
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fedora39, ubi9, ubuntu22.04, ubuntu24.04) in both x86_64 and aarch64 architectures,
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as well as Xcode toolchains for macOS.
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"""
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SWIFT_RELEASES = {
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"6.2.1": {
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"amazonlinux2": "218fc55ba7224626fd25f8ca285b083fda020e3737146e2fe10b8ae9aaf2ae97",
24+
"amazonlinux2-aarch64": "00999039a82a81b1e9f3915eb2c78b63552fe727bcbfe9a2611628ac350287f2",
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"debian12": "d6405e4fb7f092cbb9973a892ce8410837b4335f67d95bf8607baef1f69939e4",
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"debian12-aarch64": "522d231bb332fe5da9648ca7811e8054721f05eccd1eefae491cf4a86eab4155",
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"fedora39": "ec78360dfa7817d7637f207b1ffb3a22164deb946c9a9f8c40ab8871856668e8",
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"fedora39-aarch64": "d8bc04e7e283e314d1b96adc55e1803dd01a0106dc0d0263e784a5c9f2a46d3b",
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"ubi9": "9a082c3efdeda2e65cbc7038d0c295b75fa48f360369b2538449fc665192da3e",
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"ubi9-aarch64": "47f109f1f63fa24df3659676bb1afac2fdd05c0954d4f00977da6a868dd31e66",
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"ubuntu22.04": "5ec23d4004f760fafdbb76c21e380d3bacef1824300427a458dc88c1c0bef381",
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"ubuntu22.04-aarch64": "ab5f3eb0349c575c38b96ed10e9a7ffa2741b0038285c12d56251a38749cadf0",
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"ubuntu24.04": "4022cb64faf7e2681c19f9b62a22fb7d9055db6194d9e4a4bef9107b6ce10946",
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"ubuntu24.04-aarch64": "3b70a3b23b9435c37112d96ee29aa70061e23059ef9c4d3cfa4951f49c4dfedb",
35+
"xcode": "4ca13d0abd364664d19facd75e23630c0884898bbcaf1920b45df288bdb86cb2",
36+
},
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"6.2.2": {
38+
"amazonlinux2": "2de884b0ccf1012750fd93c710506c3d216e34676b488ba318fefe711a136125",
39+
"amazonlinux2-aarch64": "4bb5714a683d8ddf78bc69027cb2acc9854ae51e91e55badba2e5c231b923a42",
40+
"debian12": "d4817caaf70e95639702b69be24730057f4220f76796573397cdc067a4360041",
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"debian12-aarch64": "1e225d1f9a78de78d5f4d0cdc4e58531b125788a7c5f904db68a3f6f21f639d9",
42+
"fedora39": "c68971618737c66e76e39e7304a59f6af332c68dca64f0a97ff2393bfd09e136",
43+
"fedora39-aarch64": "aaec949e278427fc8ba095a4edf67b80d1a8230a5c7c43ef9383d6860407dd75",
44+
"ubi9": "a90b616b97616fdc4906babced4961982ab36a1e3ce44cf07d4a036298529abb",
45+
"ubi9-aarch64": "a90b616b97616fdc4906babced4961982ab36a1e3ce44cf07d4a036298529abb",
46+
"ubuntu22.04": "b3cafe1ca87ba0bf253639aec53052b545c9fcccd810da8cf15ac9ad62561f7e",
47+
"ubuntu22.04-aarch64": "6f3bff4c2a69163e56d2bacfa8ede2535ae52f5a29824f3c13d9e4c3ad1ac155",
48+
"ubuntu24.04": "2e226607d419f7b6197a6a0a9b317ee1cdb4125c21c72b0b24adfb82d4274fa9",
49+
"ubuntu24.04-aarch64": "53152dfed20e971f4cdbb40a205e9b4a8d8d34a84e1d0fefbdfce7af87072db1",
50+
"xcode": "1173886e2084a6705a774875e4b1b2fceeb890d79ced54ee824cfd10bdc26328",
51+
},
52+
"6.2.3": {
53+
"amazonlinux2": "fe1513e441ab653a134f9fd35855fe5dddac5fa716c0b0fe119eb76757525f05",
54+
"amazonlinux2-aarch64": "0753ec4fb786c626a681803c25ea3c681df583f0f576a6e326a25bd92294b4c6",
55+
"debian12": "d47b7416f68e75b3b8ed538c939dc6e5a9e9a8de2d605389661d2ef31e75b772",
56+
"debian12-aarch64": "6d9703968ef399b953e67229c5feb0781ceca12d089208ecef8157b59e22582b",
57+
"fedora39": "34314fab3f8e975980bcddf6b372b10e6430fb5c469e7232b95e06ae2762f449",
58+
"fedora39-aarch64": "802154a68eade7051ddaa290cf30d51a801a6b291edfc34643398acde9dffde9",
59+
"ubi9": "a43399aad9d5b19f7d7d6f88ed19129ca6afaf34bb6b455ca01e61a98ec425f2",
60+
"ubi9-aarch64": "a43399aad9d5b19f7d7d6f88ed19129ca6afaf34bb6b455ca01e61a98ec425f2",
61+
"ubuntu22.04": "23653abba4b153aa6625f73e63e3f119bdaf18363b00e3770a306fbd9b192aef",
62+
"ubuntu22.04-aarch64": "fbb4282ec60107cc844700aac6c7a8115534defb1c9b36867bd77c0829e5b163",
63+
"ubuntu24.04": "3e0b8eaf9210131a1756e6a1a9e9103bac83609a0ae604d6f2e791053f98f115",
64+
"ubuntu24.04-aarch64": "48dc99bcabc54feadd2942f4830be854ca2396e2db4ca4ec6b6c926a25c87d55",
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"xcode": "c1ed84cf543286c549caaccc47e0b47d8c61c3c8fedbce1205dedcbebe7601a8",
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},
67+
}

‎tools/swift-releases/BUILD‎

Lines changed: 17 additions & 0 deletions
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@@ -0,0 +1,17 @@
1+
load(
2+
"//swift:swift_binary.bzl",
3+
"swift_binary",
4+
)
5+
6+
package(default_visibility = ["//visibility:public"])
7+
8+
licenses(["notice"])
9+
10+
swift_binary(
11+
name = "swift-releases",
12+
srcs = ["SwiftReleases.swift"],
13+
visibility = ["//visibility:public"],
14+
deps = [
15+
"@com_github_apple_swift_argument_parser//:ArgumentParser",
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],
17+
)

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