Display logging messages from poetry-core when building

poetry/console/commands/build.py

@@ -13,6 +13,7 @@ class BuildCommand(EnvCommand):
     ]
 
     loggers = [
+        "poetry.core.masonry.builders.builder",
         "poetry.core.masonry.builders.sdist",
         "poetry.core.masonry.builders.wheel",
     ]

poetry/console/config/application_config.py

@@ -90,6 +90,11 @@ class ApplicationConfig(BaseApplicationConfig):
             logger.handlers = [handler]
 
             level = logging.WARNING
+            # The builders loggers are special and we can actually
+            # start at the INFO level.
+            if logger.name.startswith("poetry.core.masonry.builders"):
+                level = logging.INFO
+
             if io.is_debug():
                 level = logging.DEBUG
             elif io.is_very_verbose() or io.is_verbose():

poetry/console/logging/formatters/__init__.py

@@ -2,6 +2,7 @@ from .builder_formatter import BuilderLogFormatter
 
 
 FORMATTERS = {
+    "poetry.core.masonry.builders.builder": BuilderLogFormatter(),
     "poetry.core.masonry.builders.sdist": BuilderLogFormatter(),
     "poetry.core.masonry.builders.wheel": BuilderLogFormatter(),
 }

poetry/console/logging/formatters/builder_formatter.py

@@ -5,9 +5,17 @@ from .formatter import Formatter
 
 class BuilderLogFormatter(Formatter):
     def format(self, msg):  # type: (str) -> str
-        if msg.startswith(" - Building ") or msg.startswith(" - Built "):
-            msg = re.sub(r" - (Buil(?:t|ing)) (.+)", " - \\1 <c2>\\2</c2>", msg)
-        elif msg.startswith(" - Adding: "):
-            msg = re.sub(r" - Adding: (.+)", " - Adding: <b>\\1</b>", msg)
+        if msg.startswith("Building "):
+            msg = re.sub("Building (.+)", "  - Building <info>\\1</info>", msg)
+        elif msg.startswith("Built "):
+            msg = re.sub("Built (.+)", "  - Built <success>\\1</success>", msg)
+        elif msg.startswith("Adding: "):
+            msg = re.sub("Adding: (.+)", "  - Adding: <b>\\1</b>", msg)
+        elif msg.startswith("Executing build script: "):
+            msg = re.sub(
+                "Executing build script: (.+)",
+                "  - Executing build script: <b>\\1</b>",
+                msg,
+            )
 
         return msg

poetry/console/logging/io_handler.py

@@ -5,13 +5,7 @@ class IOHandler(logging.Handler):
     def __init__(self, io):
         self._io = io
 
-        level = logging.WARNING
-        if io.is_debug():
-            level = logging.DEBUG
-        elif io.is_very_verbose() or io.is_verbose():
-            level = logging.INFO
-
-        super(IOHandler, self).__init__(level)
+        super(IOHandler, self).__init__()
 
     def emit(self, record):
         try:

pyproject.toml

@@ -24,7 +24,7 @@ classifiers = [
 [tool.poetry.dependencies]
 python = "~2.7 || ^3.5"
 
-poetry-core = "^1.0.0a8"
+poetry-core = "^1.0.0a9"
 cleo = "^0.8.1"
 clikit = "^0.6.2"
 crashtest = { version = "^0.3.0", python = "^3.6" }