Build .conda artifacts by default

conda_build/cli/main_build.py

@@ -24,7 +24,6 @@
     get_or_merge_config,
     zstd_compression_level_default,
 )
-from ..deprecations import deprecated
 from ..utils import LoggingContext
 from .actions import KeyValueAction, PackageTypeNormalize
 from .main_render import get_render_parser
@@ -488,19 +487,14 @@ def parse_args(args: Sequence[str] | None) -> tuple[ArgumentParser, Namespace]:
             "Do not display value of environment variables specified in build.script_env."
         ),
     )
-    # TODO: Remove in 25.1
-    default_pkg_format = context.conda_build.get("pkg_format")
-    if default_pkg_format is None:
-        warn_about_default_pkg_format = True
-        default_pkg_format = conda_pkg_format_default
-    else:
-        warn_about_default_pkg_format = False
     parser.add_argument(
         "--package-format",
         dest="conda_pkg_format",
         choices=CondaPkgFormat.acceptable(),
         action=PackageTypeNormalize,
-        default=CondaPkgFormat.normalize(default_pkg_format),
+        default=CondaPkgFormat.normalize(
+            context.conda_build.get("pkg_format", conda_pkg_format_default)
+        ),
         help=(
             "Choose which package type(s) are outputted. (Accepted inputs .tar.bz2 or 1, .conda or 2)"
         ),
@@ -510,26 +504,6 @@ def parse_args(args: Sequence[str] | None) -> tuple[ArgumentParser, Namespace]:
     parsed = parser.parse_args(args)
     check_recipe(parsed.recipe)
 
-    # TODO: Remove in 25.1
-    if (
-        all(not arg.startswith("--package-format") for arg in (args or []))
-        and warn_about_default_pkg_format
-        and "purge" not in parsed.recipe
-        and "purge-all" not in parsed.recipe
-    ):
-        deprecated.topic(
-            "24.11",
-            "25.1",
-            topic="The default `pkg_format` of '.tar.bz2'",
-            addendum=(
-                "\n\n"
-                "The new default `pkg_format` value will be '.conda'. "
-                "If you want to keep using `.tar.bz2`, consider:\n"
-                "- Setting `conda_build.pkg_format: 'tar.bz2' in your condarc file.\n"
-                "- Using `--pkg-format=tar.bz2` in the CLI.\n"
-            ),
-            deprecation_type=FutureWarning,
-        )
     return parser, parsed
 
 

conda_build/config.py

@@ -101,7 +101,7 @@ def ext(self):
 no_rewrite_stdout_env_default = "false"
 ignore_verify_codes_default = []
 exit_on_verify_error_default = False
-conda_pkg_format_default = CondaPkgFormat.V1
+conda_pkg_format_default = CondaPkgFormat.V2
 zstd_compression_level_default = 19
 
 

conda_build/metadata.py

@@ -1751,7 +1751,12 @@ def dist(self):
         return f"{self.name()}-{self.version()}-{self.build_id()}"
 
     def pkg_fn(self):
-        return f"{self.dist()}.tar.bz2"
+        ext = (
+            CondaPkgFormat.V2.ext
+            if self.config.conda_pkg_format == CondaPkgFormat.V2
+            else CondaPkgFormat.V1.ext
+        )
+        return f"{self.dist()}{ext}"
 
     def is_app(self):
         return bool(self.get_value("app/entry"))

conda_build/utils.py

@@ -1141,10 +1141,14 @@ def package_has_file(package_path, file_path, refresh_mode="modified"):
             conda_package_handling.api.extract(
                 package_path, dest_dir=td, components="info"
             )
-        else:
+        elif package_path.endswith(".tar.bz2"):
             conda_package_handling.api.extract(
                 package_path, dest_dir=td, components=file_path
             )
+        else:
+            conda_package_handling.api.extract(
+                package_path, dest_dir=td, components="pkg"
+            )
         resolved_file_path = os.path.join(td, file_path)
         if os.path.exists(resolved_file_path):
             # TODO :: Remove this text-mode load. Files are binary.

docs/source/concepts/generating-index.rst

@@ -97,7 +97,26 @@ Parts of a channel
         "version": "0.1.0"
       },
       ...
+    },
+    "packages.conda": {
+        "super-fun-package-0.2.0-py310_0.conda": {
+        "build": "py37_0",
+        "build_number": 0,
+        "depends": [
+          "some-depends"
+        ],
+        "license": "BSD",
+        "md5": "a75683f8d9f5b58c19a8ec5d0b7f796e",
+        "name": "super-fun-package",
+        "sha256": "e39029d601b9f493ea05c37a2630a9fe5810f1fe3c3f4250e51886838e8e0287",
+        "size": 4125,
+        "subdir": "win-64",
+        "timestamp": 1530731987654,
+        "version": "0.2.0"
+      },
+      ...
     }
+  }
 
 How an index is generated
 -------------------------
@@ -218,7 +237,7 @@ already extracted can save a lot of time in fully re-creating the index, should
 that be necessary.
 
 An aside: one design goal of the ``.conda`` package format was to make indexing as
-fast as possible. To achieve this, the .conda format separates metadata from the
+fast as possible. To achieve this, the ``.conda`` format separates metadata from the
 actual package contents. Where the old ``.tar.bz2`` container required extracting
 the entire package to obtain the metadata, the new package format allows
 extraction of metadata without touching the package contents. This allows

docs/source/concepts/package-naming-conv.rst

@@ -43,8 +43,8 @@ The following figure compares a canonical name to a filename:
 |
 
 Conda supports both ``.conda`` and ``.tar.bz2`` package extensions. The ``.conda``
-format is generally smaller and more efficient than ``.tar.bz2`` packages.
-Read our `blog post`_ about it to learn more.
+format (default since 25.1) is generally smaller and more efficient than ``.tar.bz2``
+packages. Read our `blog post`_ about it to learn more.
 
 The build string is created as the package is built. Things that
 contribute to it are the variants specified either by the command

docs/source/resources/package-spec.rst

@@ -17,9 +17,9 @@ There are currently two formats of archives that are supported:
      - **Description**
 
    * - .tar.bz2
-     - The original format of conda packages.  Is the default output of conda-build.
+     - The original format of conda packages.
    * - .conda
-     - 2nd Gen.  This is a more compact and thus faster. Can be outputed from conda-build by setting output in ``.condarc`` file.
+     - 2nd Gen. This is a more compact and thus faster. Default since 25.1.
 
 The formats are identical across platforms and operating systems.
 During the install process, all files are extracted into the

news/5527-dot-conda-default

@@ -0,0 +1,19 @@
+### Enhancements
+
+* Make `.conda` the new default package format. `.tar.bz2` files can still be generated with `--package-format=1` and/or `conda_build.pkg_format: 1` in your `.condarc` file. (#5183 via #5527)
+
+### Bug fixes
+
+* <news item>
+
+### Deprecations
+
+* <news item>
+
+### Docs
+
+* <news item>
+
+### Other
+
+* <news item>