reword the --with help text and deprecate --without (#212)

Author: jonapich

README.md

@@ -44,9 +44,9 @@ poetry export -f requirements.txt --output requirements.txt
 
 * `--format (-f)`: The format to export to (default: `requirements.txt`). Currently, only `constraints.txt` and `requirements.txt` are supported.
 * `--output (-o)`: The name of the output file.  If omitted, print to standard output.
-* `--without`: The dependency groups to ignore when exporting.
-* `--with`: The optional dependency groups to include when exporting.
-* `--only`: The only dependency groups to include when exporting.
+* `--with`: The optional and non-optional dependency groups to include. By default, only the main dependencies are included.
+* `--only`: The only dependency groups to include. It is possible to exclude the `main` group this way.
+* `--without`: The dependency groups to ignore. (**Deprecated**)
 * `--default`: Only export the main dependencies. (**Deprecated**)
 * `--dev`: Include development dependencies. (**Deprecated**)
 * `--extras (-E)`: Extra sets of dependencies to include.

docs/_index.md

@@ -67,10 +67,10 @@ poetry export --only test,docs
 
 * `--format (-f)`: The format to export to (default: `requirements.txt`). Currently, only `constraints.txt` and `requirements.txt` are supported.
 * `--output (-o)`: The name of the output file.  If omitted, print to standard output.
-* `--without`: The dependency groups to ignore when exporting.
-* `--with`: The optional dependency groups to include when exporting.
-* `--only`: The only dependency groups to include when exporting.
-* `--default`: Only export the main dependencies. (**Deprecated**)
+* `--with`: The optional and non-optional dependency groups to include. By default, only the main dependencies are included.
+* `--only`: The only dependency groups to include. It is possible to exclude the `main` group this way.
+* {{< option name="without" deprecated=true >}}The dependency groups to ignore.{{< /option >}}
+* {{< option name="default" deprecated=true >}}Only export the main dependencies.{{< /option >}}
 * {{< option name="dev" deprecated=true >}}Include development dependencies.{{< /option >}}
 * `--extras (-E)`: Extra sets of dependencies to include.
 * `--all-extras`: Include all sets of extra dependencies.

src/poetry_plugin_export/command.py

@@ -41,8 +41,31 @@ class ExportCommand(GroupCommand):
             None,
             "Include development dependencies. (<warning>Deprecated</warning>)",
         ),
-        *GroupCommand._group_dependency_options(),
         option("all-groups", None, "Include all dependency groups"),
+        option(
+            "with",
+            None,
+            # note: unlike poetry install, the default excludes non-optional groups
+            "The optional and non-optional dependency groups to include."
+            " By default, only the main dependencies are included.",
+            flag=False,
+            multiple=True,
+        ),
+        option(
+            "only",
+            None,
+            "The only dependency groups to include.",
+            flag=False,
+            multiple=True,
+        ),
+        option(
+            "without",
+            None,
+            # deprecated: groups are always excluded by default
+            "The dependency groups to ignore. (<warning>Deprecated</warning>)",
+            flag=False,
+            multiple=True,
+        ),
         option(
             "extras",
             "E",