[SR-14316] SwiftPM - Building a project with developemnt toolchain fails on M1

[shahmishal]

Previous ID	SR-14316
Radar	rdar://problem/75186958
Original Reporter	@shahmishal
Type	Bug

Additional Detail from JIRA

Votes	0
Component/s
Labels	Bug
Assignee	None
Priority	Medium

Watchers: @shahmishal

md5: da3bde8e1c53c1e0a83607c1381751f5

Issue Description:

Reported: https://forums.swift.org/t/building-a-project-with-developemnt-toolchain-fails-on-m1/45450

Didn't found the right place to ask. I'm trying to build a project with a development toolchain on M1 MacAir. Is this a knowing issue?

DEVELOPMENT-SNAPSHOT-2021-03-02

xcrun --toolchain "Swift Development Snapshot" --run swift build
/Users/username/Projects/Test: error: manifest parse error(s):
/Users/username/Projects/Test/Package.swift:4:8: error: module 'PackageDescription' was created for incompatible target x86_64-apple-macosx10.15: /var/folders/91/9_b_gpss1t98xcyy6xyg7kdr0000gn/C/clang/ModuleCache/PackageDescription-3KG9PCVIYEOUP.swiftmodule
import PackageDescription

[shahmishal]

@swift-ci create