Add preferred use of build for package CLI (#13109)

Build with `build` if available. Warn and fall back to previous
`setup.py`-based builds if `build` build fails.

spacy/cli/package.py

@@ -1,5 +1,7 @@
+import os
 import re
 import shutil
+import subprocess
 import sys
 from collections import defaultdict
 from pathlib import Path
@@ -11,6 +13,7 @@ from thinc.api import Config
 from wasabi import MarkdownRenderer, Printer, get_raw_input
 
 from .. import about, util
+from ..compat import importlib_metadata
 from ..schemas import ModelMetaSchema, validate
 from ._util import SDIST_SUFFIX, WHEEL_SUFFIX, Arg, Opt, app, string_to_list
 
@@ -35,7 +38,7 @@ def package_cli(
     specified output directory, and the data will be copied over. If
     --create-meta is set and a meta.json already exists in the output directory,
     the existing values will be used as the defaults in the command-line prompt.
-    After packaging, "python setup.py sdist" is run in the package directory,
+    After packaging, "python -m build --sdist" is run in the package directory,
     which will create a .tar.gz archive that can be installed via "pip install".
 
     If additional code files are provided (e.g. Python files containing custom
@@ -78,9 +81,17 @@ def package(
     input_path = util.ensure_path(input_dir)
     output_path = util.ensure_path(output_dir)
     meta_path = util.ensure_path(meta_path)
-    if create_wheel and not has_wheel():
-        err = "Generating a binary .whl file requires wheel to be installed"
-        msg.fail(err, "pip install wheel", exits=1)
+    if create_wheel and not has_wheel() and not has_build():
+        err = (
+            "Generating wheels requires 'build' or 'wheel' (deprecated) to be installed"
+        )
+        msg.fail(err, "pip install build", exits=1)
+    if not has_build():
+        msg.warn(
+            "Generating packages without the 'build' package is deprecated and "
+            "will not be supported in the future. To install 'build': pip "
+            "install build"
+        )
     if not input_path or not input_path.exists():
         msg.fail("Can't locate pipeline data", input_path, exits=1)
     if not output_path or not output_path.exists():
@@ -184,12 +195,37 @@ def package(
     msg.good(f"Successfully created package directory '{model_name_v}'", main_path)
     if create_sdist:
         with util.working_dir(main_path):
+            # run directly, since util.run_command is not designed to continue
+            # after a command fails
+            ret = subprocess.run(
+                [sys.executable, "-m", "build", ".", "--sdist"],
+                env=os.environ.copy(),
+            )
+            if ret.returncode != 0:
+                msg.warn(
+                    "Creating sdist with 'python -m build' failed. Falling "
+                    "back to deprecated use of 'python setup.py sdist'"
+                )
                 util.run_command([sys.executable, "setup.py", "sdist"], capture=False)
         zip_file = main_path / "dist" / f"{model_name_v}{SDIST_SUFFIX}"
         msg.good(f"Successfully created zipped Python package", zip_file)
     if create_wheel:
         with util.working_dir(main_path):
-            util.run_command([sys.executable, "setup.py", "bdist_wheel"], capture=False)
+            # run directly, since util.run_command is not designed to continue
+            # after a command fails
+            ret = subprocess.run(
+                [sys.executable, "-m", "build", ".", "--wheel"],
+                env=os.environ.copy(),
+            )
+            if ret.returncode != 0:
+                msg.warn(
+                    "Creating wheel with 'python -m build' failed. Falling "
+                    "back to deprecated use of 'wheel' with "
+                    "'python setup.py bdist_wheel'"
+                )
+                util.run_command(
+                    [sys.executable, "setup.py", "bdist_wheel"], capture=False
+                )
         wheel_name_squashed = re.sub("_+", "_", model_name_v)
         wheel = main_path / "dist" / f"{wheel_name_squashed}{WHEEL_SUFFIX}"
         msg.good(f"Successfully created binary wheel", wheel)
@@ -209,6 +245,17 @@ def has_wheel() -> bool:
         return False
 
 
+def has_build() -> bool:
+    # it's very likely that there is a local directory named build/ (especially
+    # in an editable install), so an import check is not sufficient; instead
+    # check that there is a package version
+    try:
+        importlib_metadata.version("build")
+        return True
+    except importlib_metadata.PackageNotFoundError:  # type: ignore[attr-defined]
+        return False
+
+
 def get_third_party_dependencies(
     config: Config, exclude: List[str] = util.SimpleFrozenList()
 ) -> List[str]:

website/docs/usage/saving-loading.mdx

@@ -405,7 +405,7 @@ available to spaCy, all you need to do is install the package in your
 environment:
 
 ```bash
-$ python setup.py develop
+$ python -m pip install .
 ```
 
 spaCy is now able to create the pipeline component `"snek"` – even though you
@@ -673,7 +673,7 @@ $ python -m spacy package ./en_example_pipeline ./packages
 ```
 
 This command will create a pipeline package directory and will run
-`python setup.py sdist` in that directory to create a binary `.whl` file or
+`python -m build` in that directory to create a binary `.whl` file or
 `.tar.gz` archive of your package that can be installed using `pip install`.
 Installing the binary wheel is usually more efficient.