fix: proper printout ordering and more details (#365)

- fix: smarter printout of changes
- fix: flush printer
- fix: more details from color printout

---------

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

Author: henryiii

src/scikit_build_core/_logging.py

@@ -128,4 +128,4 @@ def rich_print(*args: object, **kwargs: object) -> None:
     args_2 = tuple(_process_rich(arg) for arg in args)
     if args != args_2:
         args_2 = (*args_2[:-1], args_2[-1] + colors()["reset"])
-    print(*args_2, **kwargs)  # type: ignore[call-overload] # noqa: T201
+    print(*args_2, **kwargs, flush=True)  # type: ignore[call-overload] # noqa: T201

src/scikit_build_core/_shutil.py

@@ -21,7 +21,7 @@ class Run:
     cwd: os.PathLike[str] | None = None
 
     # Stores last printout, for cleaner debug logging
-    _prev_env: ClassVar[str] = ""
+    _prev_env: ClassVar[dict[str, str]] = {}
 
     def live(self, *args: str | os.PathLike[str]) -> None:
         """
@@ -47,12 +47,19 @@ def _run(
         ]
 
         if self.env:
-            msg = "\n  ".join(f"{k}={v}" for k, v in sorted(self.env.items()))
-            if msg != self._prev_env:
+            if not self._prev_env:
+                type(self)._prev_env = self.env.copy()
+                msg = "\n  ".join(f"{k}={v}" for k, v in sorted(self.env.items()))
                 logger.debug("RUNENV:\n  {}", msg)
             else:
-                logger.debug("RUNENV: same as last run")
-                type(self)._prev_env = msg
+                msg = "\n  ".join(
+                    f"{self._key_diff(k)} {k}={self.env.get(k, '<unset>')}"
+                    for k in sorted(self.env.keys() | self._prev_env.keys())
+                    if self._prev_env.get(k, None) != self.env.get(k, None)
+                )
+                logger.debug("RUNENV - changes since last run only:\n  {}", msg)
+                type(self)._prev_env = self.env.copy()
+
         logger.debug("RUN: {}", " ".join(options))
 
         return subprocess.run(
@@ -63,3 +70,11 @@ def _run(
             env=self.env,
             cwd=self.cwd,
         )
+
+    def _key_diff(self, k: str) -> str:
+        assert self.env
+        if k in self.env and k not in self._prev_env:
+            return "+"
+        if k in self._prev_env and k not in self.env:
+            return "-"
+        return " "

src/scikit_build_core/build/wheel.py

@@ -93,8 +93,13 @@ def _build_wheel_impl(
     cmake = CMake.default_search(
         minimum_version=Version(settings.cmake.minimum_version)
     )
+    action = (
+        "metadata" if wheel_directory is None else "editable" if editable else "wheel"
+    )
     rich_print(
-        f"[green]***[/green] [bold][green]scikit-build-core {__version__}[/green] using [blue]CMake {cmake.version}[/blue]"
+        f"[green]***[/green] [bold][green]scikit-build-core {__version__}[/green]",
+        f"using [blue]CMake {cmake.version}[/blue]",
+        f"[red]({action})[/red]",
     )
 
     with tempfile.TemporaryDirectory() as tmpdir:
@@ -187,7 +192,7 @@ def _build_wheel_impl(
                 path.write_bytes(data)
             return WheelImplReturn(wheel_filename=dist_info.name)
 
-        rich_print("[green]***[/green] [bold]Configurating CMake...")
+        rich_print("[green]***[/green] [bold]Configuring CMake...")
         defines: dict[str, str] = {}
         cache_entries = {f"SKBUILD_{k.upper()}_DIR": v for k, v in wheel_dirs.items()}
         builder.configure(
@@ -212,7 +217,7 @@ def _build_wheel_impl(
         rich_print("[green]***[/green] [bold]Installing project into wheel...")
         builder.install(install_dir)
 
-        rich_print("[green]***[/green] [bold]Making wheel...")
+        rich_print(f"[green]***[/green] [bold]Making {action}...")
         packages = _get_packages(
             packages=settings.wheel.packages,
             name=normalized_name,
@@ -295,4 +300,5 @@ def _build_wheel_impl(
                 raise AssertionError(msg)
 
     wheel_filename: str = wheel.wheelpath.name
+    rich_print(f"[green]***[/green] [bold]Created[/bold] {wheel_filename}...")
     return WheelImplReturn(wheel_filename=wheel_filename, mapping=mapping)