mk-oss-toolchain

if [ -z "$1" ]; then
   echo "usage: $0 <tc-name>"
   exit 1
fi

src=~/Library/Developer/Toolchains/$1.xctoolchain
name=$(basename *.xcworkspace .xcworkspace)
id=${name}-oss
dest=~/Library/Developer/Toolchains/${id}.xctoolchain
derivedData=~/Library/Developer/Xcode/DerivedData/${name}-*/Build/Products/Debug
#derivedData=~/Library/Developer/Xcode/DerivedData/${name}-*/Build/Intermediates.noindex/InstallIntermediates/macosx/Products/Debug

if [ -z "$derivedData" ]; then
   echo run from the worktree directory
   exit 1
fi

if [ ! -d $src ]; then
   echo Source toolchain not found: $src
   exit 1
fi

if [ ! -d $derivedData ]; then
   echo Derived data not found: $derivedData
   exit 1
fi

echo Creating $id.xctoolchain

rm -fr $dest
ditto $src $dest

rm -f $dest/ToolchainInfo.plist
rm -fr $dest/_CodeSignature
cp ~/Library/Developer/Toolchains/Info.plist $dest/Info.plist
plutil -replace CFBundleIdentifier -string $id $dest/Info.plist

ln -sf $derivedData/swift-package-manager $dest/usr/bin/swift-package
ln -sf $derivedData/sourcekit-lsp $dest/usr/bin/sourcekit-lsp

rm -fr $dest/usr/lib/swift/pm/ManifestAPI/*
ln -sf $derivedData/CompilerPluginSupport.swiftmodule $dest/usr/lib/swift/pm/ManifestAPI
ln -sf $derivedData/PackageDescription.swiftmodule $dest/usr/lib/swift/pm/ManifestAPI
ln -sf $derivedData/PackageFrameworks/PackageDescription.framework $dest/usr/lib/swift/pm/ManifestAPI

rm -fr $dest/usr/lib/swift/pm/PluginAPI/*
ln -sf $derivedData/PackagePlugin.swiftmodule $dest/usr/lib/swift/pm/PluginAPI
ln -sf $derivedData/PackageFrameworks/PackagePlugin.framework $dest/usr/lib/swift/pm/PluginAPI

TOOLCHAINS=$id swift --version
TOOLCHAINS=$id swift build --version