remove hardly used TimeMachine feature

compiler/options.nim

@@ -17,7 +17,6 @@ const
   hasFFI* = defined(useFFI)
   newScopeForIf* = true
   useCaas* = not defined(noCaas)
-  noTimeMachine* = defined(avoidTimeMachine) and defined(macosx)
   copyrightYear* = "2018"
 
 type                          # please make sure we have under 32 options
@@ -329,28 +328,6 @@ proc toGeneratedFile*(path, ext: string): string =
   result = joinPath([getNimcacheDir(), changeFileExt(tail, ext)])
   #echo "toGeneratedFile(", path, ", ", ext, ") = ", result
 
-when noTimeMachine:
-  var alreadyExcludedDirs = initSet[string]()
-  proc excludeDirFromTimeMachine(dir: string) {.raises: [].} =
-    ## Calls a macosx command on the directory to exclude it from backups.
-    ##
-    ## The macosx tmutil command is invoked to mark the specified path as an
-    ## item to be excluded from time machine backups. If a path already exists
-    ## with files before excluding it, newer files won't be added to the
-    ## directory, but previous files won't be removed from the backup until the
-    ## user deletes that directory.
-    ##
-    ## The whole proc is optional and will ignore all kinds of errors. The only
-    ## way to be sure that it works is to call ``tmutil isexcluded path``.
-    if alreadyExcludedDirs.contains(dir): return
-    alreadyExcludedDirs.incl(dir)
-    try:
-      var p = startProcess("/usr/bin/tmutil", args = ["addexclusion", dir])
-      discard p.waitForExit
-      p.close
-    except Exception:
-      discard
-
 proc completeGeneratedFilePath*(f: string, createSubDir: bool = true): string =
   var (head, tail) = splitPath(f)
   #if len(head) > 0: head = removeTrailingDirSep(shortenDir(head & dirSep))
@@ -358,8 +335,6 @@ proc completeGeneratedFilePath*(f: string, createSubDir: bool = true): string =
   if createSubDir:
     try:
       createDir(subdir)
-      when noTimeMachine:
-        excludeDirFromTimeMachine(subdir)
     except OSError:
       writeLine(stdout, "cannot create directory: " & subdir)
       quit(1)