installer fixes and improvements

koch.nim

@@ -110,13 +110,28 @@ proc csource(args: string) =
   exec("$4 cc $1 -r $3 --var:version=$2 --var:mingw=none csource --main:compiler/nim.nim compiler/installer.ini $1" %
        [args, VersionAsString, compileNimInst, findNim()])
 
+proc bundleNimble() =
+  if dirExists("dist/nimble/.git"):
+    exec("git --git-dir dist/nimble pull --rebase")
+  else:
+    exec("git clone https://github.com/nim-lang/nimble.git dist/nimble")
+  let tags = execProcess("git --git-dir dist/nimble/.git tag -l v*").splitLines
+  let tag = tags[^1]
+  exec("git --git-dir dist/nimble/.git checkout " & tag)
+  # now compile Nimble and copy it to $nim/bin for the installer.ini
+  # to pick it up:
+  exec(findNim() & " c dist/nimble/src/nimble.nim")
+  copyExe("dist/nimble/nimble".exe, "bin/nimble".exe)
+
 proc zip(args: string) =
+  bundleNimble()
   exec("$3 cc -r $2 --var:version=$1 --var:mingw=none --main:compiler/nim.nim scripts compiler/installer.ini" %
        [VersionAsString, compileNimInst, findNim()])
   exec("$# --var:version=$# --var:mingw=none --main:compiler/nim.nim zip compiler/installer.ini" %
        ["tools/niminst/niminst".exe, VersionAsString])
 
 proc xz(args: string) =
+  bundleNimble()
   exec("$3 cc -r $2 --var:version=$1 --var:mingw=none --main:compiler/nim.nim scripts compiler/installer.ini" %
        [VersionAsString, compileNimInst, findNim()])
   exec("$# --var:version=$# --var:mingw=none --main:compiler/nim.nim xz compiler/installer.ini" %
@@ -127,6 +142,7 @@ proc buildTool(toolname, args: string) =
   copyFile(dest="bin"/ splitFile(toolname).name.exe, source=toolname.exe)
 
 proc nsis(args: string) =
+  bundleNimble()
   # make sure we have generated the niminst executables:
   buildTool("tools/niminst/niminst", args)
   #buildTool("tools/nimgrep", args)