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Lookup unix fallback toolchain relative to SWIFT_EXEC when set #589

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Merged
merged 1 commit into from
Jun 18, 2025
Merged

Lookup unix fallback toolchain relative to SWIFT_EXEC when set #589

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69 changes: 37 additions & 32 deletions Sources/SWBGenericUnixPlatform/Plugin.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -129,39 +129,44 @@ struct GenericUnixToolchainRegistryExtension: ToolchainRegistryExtension {

let fs = context.fs

if let swift = StackedSearchPath(environment: .current, fs: fs).lookup(Path("swift")), fs.exists(swift) {
let realSwiftPath = try fs.realpath(swift).dirname.normalize()
let hasUsrBin = realSwiftPath.str.hasSuffix("/usr/bin")
let hasUsrLocalBin = realSwiftPath.str.hasSuffix("/usr/local/bin")
let path: Path
switch (hasUsrBin, hasUsrLocalBin) {
case (true, false):
path = realSwiftPath.dirname.dirname
case (false, true):
path = realSwiftPath.dirname.dirname.dirname
case (false, false):
throw StubError.error("Unexpected toolchain layout for Swift installation path: \(realSwiftPath)")
case (true, true):
preconditionFailure()
for swift in [
Environment.current["SWIFT_EXEC"].map(Path.init),
StackedSearchPath(environment: .current, fs: fs).lookup(Path("swift"))
].compactMap(\.self) {
if fs.exists(swift) {
let realSwiftPath = try fs.realpath(swift).dirname.normalize()
let hasUsrBin = realSwiftPath.str.hasSuffix("/usr/bin")
let hasUsrLocalBin = realSwiftPath.str.hasSuffix("/usr/local/bin")
let path: Path
switch (hasUsrBin, hasUsrLocalBin) {
case (true, false):
path = realSwiftPath.dirname.dirname
case (false, true):
path = realSwiftPath.dirname.dirname.dirname
case (false, false):
throw StubError.error("Unexpected toolchain layout for Swift installation path: \(realSwiftPath)")
case (true, true):
preconditionFailure()
}
let llvmDirectories = try Array(fs.listdir(Path("/usr/lib")).filter { $0.hasPrefix("llvm-") }.sorted().reversed())
let llvmDirectoriesLocal = try Array(fs.listdir(Path("/usr/local")).filter { $0.hasPrefix("llvm") }.sorted().reversed())
return [
Toolchain(
identifier: ToolchainRegistry.defaultToolchainIdentifier,
displayName: "Default",
version: Version(),
aliases: ["default"],
path: path,
frameworkPaths: [],
libraryPaths: llvmDirectories.map { "/usr/lib/\($0)/lib" } + llvmDirectoriesLocal.map { "/usr/local/\($0)/lib" } + ["/usr/lib64"],
defaultSettings: [:],
overrideSettings: [:],
defaultSettingsWhenPrimary: [:],
executableSearchPaths: realSwiftPath.dirname.relativeSubpath(from: path).map { [path.join($0).join("bin")] } ?? [],
testingLibraryPlatformNames: [],
fs: fs)
]
}
let llvmDirectories = try Array(fs.listdir(Path("/usr/lib")).filter { $0.hasPrefix("llvm-") }.sorted().reversed())
let llvmDirectoriesLocal = try Array(fs.listdir(Path("/usr/local")).filter { $0.hasPrefix("llvm") }.sorted().reversed())
return [
Toolchain(
identifier: ToolchainRegistry.defaultToolchainIdentifier,
displayName: "Default",
version: Version(),
aliases: ["default"],
path: path,
frameworkPaths: [],
libraryPaths: llvmDirectories.map { "/usr/lib/\($0)/lib" } + llvmDirectoriesLocal.map { "/usr/local/\($0)/lib" } + ["/usr/lib64"],
defaultSettings: [:],
overrideSettings: [:],
defaultSettingsWhenPrimary: [:],
executableSearchPaths: realSwiftPath.dirname.relativeSubpath(from: path).map { [path.join($0).join("bin")] } ?? [],
testingLibraryPlatformNames: [],
fs: fs)
]
}

return []
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