Minor: Remove superfluous if in Dub constructor ...

getPackageSuppliers already handles SkipPackageSuppliers.none correctly,
no need for an extra check.

cache the generated test main file: dub_test_root.d ...

these changes prevent dub from rebuilding a project every time it runs a unittest.

merge stable (#2014) ...

* Fix bogus warning for non-path based dependencies.

Introduced by #1974.

* update version to v1.23.0-rc.1

Co-authored-by: Sönke Ludwig <sludwig@outerproduct.org>

dub_test_root: remove commented code ...

Signed-off-by: Luís Ferreira <contact@lsferreira.net>

Make 'dub remove' remove all packages by default in non-interactive mode ...

Given how often it is used in the test-suite, it should be self-obvious
that it will be what most users want.

Support dependencies as git url with exact commit (#1798) ...

* Support dependencies as git url with exact commit

* Compare hashes for SCM

Fix bogus error message for the path used to reference sub packages. ...

Sub packages should ("must") always be referenced through the path of their base package instead of their own path (in case it differs). However, the dependency resolution code assume the opposite. Both way are now accepted, but referencing the sub package path directly results in a warning.

Default registry: add Skoppe's, remove Herokuapp

Merge pull request #1887 from dlang/add_codemirror ...

Add codemirror.dlang.org as the primary fallback registry.

Add codemirror.dlang.org as the primary fallback registry.

Clean up PackageManager handling of search path ...

The PackageManager is a complicated beast:
it is responsible for handling the local caches where downloaded
packages are stored, including looking up a specific version of a specific package.

One feature that stood out while going over the code was the ability to disable
the default search path.
After looking up inside of Dub more, it turns out that this feature is exclusively
used when dub is called with the '--bare' option.

However, when this happen, a special constructor of the Dub class is called,
one that calls the 'PackageManager' constructor with 3 dummy arguments,
and rely on a boolean being set to avoid those 3 dummy arguments having any effect.
This ends up with effectively providing the ability to toggle the ability to
search default search paths in theory, but in practice the dummy arguments
means that it wouldn't work, nor is it actually needed.

Instead, a special argument for the single-search path approach is provided now.
In order not to break library users, the public symbols have been deprecated,
but their usage still works.
Note that some symbols are deeply entangled: for example, 'Dub.m_overrideSearchPath'
being non-empty means that 'PackageManager.m_disableDefaultSearchPaths' is 'true'.
It also means that 'PackageManager.m_repositories' is unused (and can be empty).
Hopefully removing the ability to toggle the default search path will allow
us to simplify things and make 'PackageManager.m_repositories' the only way
to specify whether or not the default packages search path are used.

Note that additionally to the changes aiming to deprecate 'Dub.m_overrideSearchPath'
and 'PackageManager.m_disableDefaultSearchPath', an unused constructor of PackageManager
has been deprecated.

Merge pull request #1838 from Geod24/cleanup ...

Windows: Remove Roaming repository migration
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

Remove traces of VibeCustomMain ...

VibeCustomMain support was removed in Vibe.d v0.7.0,
released over 4 years ago (2015-11-04).

Windows: Remove Roaming repository migration ...

This feature has been implemented in Dub v1.8.0, almost 2 years ago.

Fix local cache

Replace calls to NativePath.toString() with .name ...

This has been deprecated in vibe-core and only triggers with 'library-nonet'.

Remove version branches for no-longer-supported compilers

Turn some enums into [static] immutable

Remove unused branch

Revert "support dependencies as git url with exact commit"

Merge pull request #1765 from belka-ew/pr_vesion_commit2 ...

support dependencies as git url with exact commit
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

Command dub lint added

Support dependencies as git url with exact commit

Merge pull request #1755 from kinke/ldc ...

Improve user experience with ldc2, incl. cross-compilation
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

Improve cross-compilation support (replace `version` checks by BuildPlatform runtime checks) ...

Also fixes #1249. For LDC as implicit cross compiler, the file
extensions for libraries and object files etc. don't depend on the
compiler, but solely on the target. Targets selected with `--arch` are
correctly probed by dub, so that the parsed `BuildPlatform` represents
the target platform.

Support fetch sub-package

Project settings file

`alias Nullable.get this` will soon be deprecated. Use `.get`.

Support of init-exec sub package

Custom init type (#1658)