Windows. import path contains not all files

[dlangBugzillaToGithub]

a11e99z reported this on 2023-06-01T16:53:23Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=23953

CC List

• Vladimir Panteleev (@CyberShadow)

Description

I faced up with issues:
(dmd2)\windows\bin64\..\..\src\druntime\import\object.d-mixin-4744(4744,19): Error: unable to read module `sync`
(dmd2)\windows\bin64\..\..\src\druntime\import\object.d-mixin-4744(4744,19):        Expected 'core\sync.d' or 'core\sync\package.d' in one of the following import paths:
import path[0] = source
import path[1] = (dmd2)\windows\bin64\..\..\src\phobos
import path[2] = (dmd2)\windows\bin64\..\..\src\druntime\import

and u can see in https://downloads.dlang.org/pre-releases/2.x/2.104.0/dmd.2.104.0-rc.1.windows.7z (2.103.1 same) that folder "src\druntime\import" doesn't contain "core/sync/package.d".
but folder "src\druntime\src" contains the one.

so workaround copy the one from one folder to other.

need to fix:
1) deal with import files/folder.
2) try to get rid of duplicate files (just increase the archive).