distros.foreignDeps made public (#18830)

* Deprecate distros.echoForeignDeps

* Deprecate distros.echoForeignDeps

* https://github.com/nim-lang/Nim/pull/18830#discussion_r705364162

* https://github.com/nim-lang/Nim/pull/18830#discussion_r705364162

changelog.md

@@ -380,6 +380,7 @@
 - Deprecated `sequtils.delete` and added an overload taking a `Slice` that raises a defect
   if the slice is out of bounds, likewise with `strutils.delete`.
 
+
 ## Language changes
 
 - The `cstring` doesn't support `[]=` operator in JS backend.

lib/pure/distros.nim

@@ -27,11 +27,11 @@
 ##
 ## See `packaging <packaging.html>`_ for hints on distributing Nim using OS packages.
 
-from strutils import contains, toLowerAscii
+from std/strutils import contains, toLowerAscii
 
 when not defined(nimscript):
-  from osproc import execProcess
-  from os import existsEnv
+  from std/osproc import execProcess
+  from std/os import existsEnv
 
 type
   Distribution* {.pure.} = enum ## the list of known distributions
@@ -211,7 +211,7 @@ template detectOs*(d: untyped): bool =
   detectOsImpl(Distribution.d)
 
 when not defined(nimble):
-  var foreignDeps: seq[string] = @[]
+  var foreignDeps*: seq[string] = @[]  ## Registered foreign deps.
 
 proc foreignCmd*(cmd: string; requiresSudo = false) =
   ## Registers a foreign command to the internal list of commands