feat: print acbs output to stderr

acbs/deps.py

@@ -1,4 +1,5 @@
 from collections import OrderedDict, defaultdict, deque
+import sys
 from typing import Deque, Dict, List
 
 from acbs.find import find_package
@@ -55,7 +56,7 @@ def strongly_connected(search_path: str, packages_list: List[str], results: list
     stack.append(vert)
 
     # search package begin
-    print(f'[{len(results) + 1}/{len(pool)}] {vert:30}\r', end='', flush=True)
+    print(f'[{len(results) + 1}/{len(pool)}] {vert:30}\r', end='', flush=True, file=sys.stderr)
     current_package = packages.get(vert)
     if current_package is None:
         package = pool.get(vert) or find_package(vert, search_path, '+stage2' if stage2 else '')

acbs/main.py

@@ -126,7 +126,7 @@ def __init__(self, args) -> None:
     def init(self) -> None:
         sys.excepthook = self.acbs_except_hdr
         print(full_line_banner(
-            f'Welcome to ACBS - {__version__}'))
+            f'Welcome to ACBS - {__version__}'), file=sys.stderr)
         if self.debug:
             log_verbosity = logging.DEBUG
         else:
@@ -190,7 +190,7 @@ def build(self) -> None:
             if not validate_package_name(i):
                 raise ValueError(f'Invalid package name: `{i}`')
             logging.debug(f'Finding {i}...')
-            print(f'[{n + 1}/{len(self.build_queue)}] {i:30}\r', end='', flush=True)
+            print(f'[{n + 1}/{len(self.build_queue)}] {i:30}\r', end='', flush=True, file=sys.stderr)
             package = find_package(i, self.tree_dir, modifiers, self.tmp_dir)
             if not package:
                 raise RuntimeError(f'Could not find package {i}')