I'd like to experiment with non copyable types with SQLite statements. Those are objects that should not have several users - for example if the database rows fetched from a statement are iterated by two consumers, none will get the rows it expects. I currently put advice against statement sharing in the documentation: move-only types look like a good fit.
But I can't start experimenting. The linked toolchain macOS #583 won't run with the following dialog (developer not verified):
/Library/Developer/Toolchains/swift-PR-63783-583.xctoolchain/usr/bin/swift package build
And GRDB version 6.8.0 won't build
with the latest available toolchain
$ /Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2023-02-23-a.xctoolchain/usr/bin/swift build ... error: compile command failed due to signal 6 (use -v to see invocation) Failed to reconstruct type for $sScs12ContinuationVyxq__GD Original type: (struct_type decl=_Concurrency.(file).AsyncThrowingStream.Continuation (parent=bound_generic_struct_type decl=_Concurrency.(file).AsyncThrowingStream (generic_type_param_type depth=0 index=0 decl=_Concurrency.(file).AsyncThrowingStream.Element) (generic_type_param_type depth=0 index=1 decl=_Concurrency.(file).AsyncThrowingStream.Failure))) ... 4. While evaluating request IRGenRequest(IR Generation for file "/Users/groue/Documents/git/groue/GRDB.swift/GRDB/ValueObservation/SharedValueObservation.swift") 5. While emitting IR SIL function "@$s4GRDB22SharedValueObservationC6values15bufferingPolicyAA05AsynccD0VyxGScs12ContinuationV09BufferingG0Oyxs5Error_p__G_tFfA_". for expression at [/Users/groue/Documents/git/groue/GRDB.swift/GRDB/ValueObservation/SharedValueObservation.swift:372:90 - line:372:91] RangeText="." ...