diff --git a/amaranth/_utils.py b/amaranth/_utils.py
index b78206c..995c514 100644
--- a/amaranth/_utils.py
+++ b/amaranth/_utils.py
@@ -89,12 +89,7 @@ def extend(cls):
 def get_linter_options(filename):
     first_line = linecache.getline(filename, 1)
     if first_line:
-        match = re.match(r"^#\s*nmigen:\s*((?:\w+=\w+\s*)(?:,\s*\w+=\w+\s*)*)\n$", first_line)
-        if match:
-            warnings.warn_explicit("Use `# amaranth:` annotation instead of `# nmigen:`",
-                DeprecationWarning, filename, 1)
-        else:
-            match = re.match(r"^#\s*amaranth:\s*((?:\w+=\w+\s*)(?:,\s*\w+=\w+\s*)*)\n$", first_line)
+        match = re.match(r"^#\s*amaranth:\s*((?:\w+=\w+\s*)(?:,\s*\w+=\w+\s*)*)\n$", first_line)
         if match:
             return dict(map(lambda s: s.strip().split("=", 2), match.group(1).split(",")))
     return dict()
diff --git a/amaranth/build/plat.py b/amaranth/build/plat.py
index 159530f..9663f30 100644
--- a/amaranth/build/plat.py
+++ b/amaranth/build/plat.py
@@ -68,20 +68,14 @@ class Platform(ResourceManager, metaclass=ABCMeta):
             if filename.endswith(suffixes):
                 yield filename
 
-    @property
-    def _deprecated_toolchain_env_vars(self):
-        return (
-            f"NMIGEN_ENV_{self.toolchain}",
-            f"AMARANTH_ENV_{self.toolchain}",
-        )
-
     @property
     def _toolchain_env_var(self):
         return f"AMARANTH_ENV_{tool_env_var(self.toolchain)}"
 
+    # TODO(amaranth-0.5): remove
     @property
     def _all_toolchain_env_vars(self):
-        return self._deprecated_toolchain_env_vars + (self._toolchain_env_var,)
+        return (f"AMARANTH_ENV_{self.toolchain}", self._toolchain_env_var,)
 
     def build(self, elaboratable, name="top",
               build_dir="build", do_build=True,
@@ -327,17 +321,14 @@ class TemplatedPlatform(Platform):
         # expected_type parameter is used to assert the type of kwargs, passing `None` will disable
         # type checking.
         def _extract_override(var, *, expected_type):
-            deprecated_var_env = "NMIGEN_{}".format(var)
             var_env = "AMARANTH_{}".format(var)
-            if deprecated_var_env in os.environ or var_env in os.environ:
+            if var_env in os.environ:
                 # On Windows, there is no way to define an "empty but set" variable; it is tempting
                 # to use a quoted empty string, but it doesn't do what one would expect. Recognize
                 # this as a useful pattern anyway, and treat `set VAR=""` on Windows the same way
                 # `export VAR=` is treated on Linux.
                 if var_env in os.environ:
                     var_env_value = os.environ[var_env]
-                elif deprecated_var_env in os.environ:
-                    var_env_value = os.environ[deprecated_var_env]
                 return re.sub(r'^\"\"$', "", var_env_value)
             elif var in kwargs:
                 if not isinstance(kwargs[var], expected_type) and not expected_type is None:
diff --git a/docs/changes.rst b/docs/changes.rst
index 9de9e26..12907cc 100644
--- a/docs/changes.rst
+++ b/docs/changes.rst
@@ -9,15 +9,19 @@ Next version
 
 Support for Python 3.6 has been dropped, and support for Python 3.11 has been added.
 
-Features deprecated in version 0.3 have been removed.
+Features deprecated in version 0.3 have been removed. In particular, the ``nmigen.*`` namespace is not provided, ``# nmigen:`` annotations are not recognized, and ``NMIGEN_*`` envronment variables are not used.
+
 
 Migrating from version 0.3
 --------------------------
 
 Apply the following changes to code written against Amaranth 0.2 to migrate it to version 0.3:
 
+* Update shell environment to use ``AMARANTH_*`` environment variables instead of ``NMIGEN_*`` environment variables.
 * Update shell environment to use ``AMARANTH_ENV_<TOOLCHAIN>`` (with all-uppercase ``<TOOLCHAIN>``name) environment variable names instead of ``AMARANTH_ENV_<Toolchain>`` or ``NMIGEN_ENV_<Toolchain>`` (with mixed-case ``<Toolchain>`` name).
 
+While code that uses the features listed as deprecated below will work in Amaranth 0.3, they will be removed in the next version.
+
 
 Language changes
 ----------------
@@ -89,6 +93,7 @@ Language changes
 * Added: :class:`ValueCastable`.
 * Deprecated: :class:`ast.UserValue`; use :class:`ValueCastable` instead.
 * Added: Division and modulo operators can be used with a negative divisor.
+* Deprecated: ``# nmigen:`` linter instructions at the beginning of file; use ``# amaranth:`` instead.
 
 
 Standard library changes
@@ -121,6 +126,7 @@ Toolchain changes
 * Deprecated: :class:`test.utils.FHDLTestCase`, with no replacement.
 * Deprecated: :func:`back.rtlil.convert()` and :func:`back.verilog.convert()` without an explicit `ports=` argument.
 * Changed: VCD output now uses a top-level "bench" module that contains testbench only signals.
+* Deprecated: ``NMIGEN_*`` environment variables; use ``AMARANTH_*`` environment variables instead.
 
 
 Platform integration changes
diff --git a/nmigen/__init__.py b/nmigen/__init__.py
deleted file mode 100644
index 88849c7..0000000
--- a/nmigen/__init__.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth import *
-from amaranth import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen, use amaranth",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/asserts.py b/nmigen/asserts.py
deleted file mode 100644
index b9926b7..0000000
--- a/nmigen/asserts.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.asserts import *
-
-
-import warnings
-warnings.warn("instead of nmigen.asserts, use amaranth.asserts",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/back/__init__.py b/nmigen/back/__init__.py
deleted file mode 100644
index 417612a..0000000
--- a/nmigen/back/__init__.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.back import *
-
-
-import warnings
-warnings.warn("instead of nmigen.back, use amaranth.back",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/back/cxxrtl.py b/nmigen/back/cxxrtl.py
deleted file mode 100644
index 5ac9025..0000000
--- a/nmigen/back/cxxrtl.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.back.cxxrtl import *
-from amaranth.back.cxxrtl import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.back.cxxrtl, use amaranth.back.cxxrtl",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/back/pysim.py b/nmigen/back/pysim.py
deleted file mode 100644
index a0d41ab..0000000
--- a/nmigen/back/pysim.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.back.pysim import *
-from amaranth.back.pysim import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.back.pysim, use amaranth.back.pysim",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/back/rtlil.py b/nmigen/back/rtlil.py
deleted file mode 100644
index c5b8ddc..0000000
--- a/nmigen/back/rtlil.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.back.rtlil import *
-from amaranth.back.rtlil import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.back.rtlil, use amaranth.back.rtlil",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/back/verilog.py b/nmigen/back/verilog.py
deleted file mode 100644
index 0ba9eca..0000000
--- a/nmigen/back/verilog.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.back.verilog import *
-from amaranth.back.verilog import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.back.verilog, use amaranth.back.verilog",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/build/__init__.py b/nmigen/build/__init__.py
deleted file mode 100644
index 96e9358..0000000
--- a/nmigen/build/__init__.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.build import *
-
-
-import warnings
-warnings.warn("instead of nmigen.build, use amaranth.build",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/build/dsl.py b/nmigen/build/dsl.py
deleted file mode 100644
index a68be3c..0000000
--- a/nmigen/build/dsl.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.build.dsl import *
-from amaranth.build.dsl import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.build.dsl, use amaranth.build.dsl",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/build/plat.py b/nmigen/build/plat.py
deleted file mode 100644
index f4b7cf3..0000000
--- a/nmigen/build/plat.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.build.plat import *
-from amaranth.build.plat import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.build.plat, use amaranth.build.plat",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/build/res.py b/nmigen/build/res.py
deleted file mode 100644
index 531e68f..0000000
--- a/nmigen/build/res.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.build.res import *
-from amaranth.build.res import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.build.res, use amaranth.build.res",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/build/run.py b/nmigen/build/run.py
deleted file mode 100644
index 03382fb..0000000
--- a/nmigen/build/run.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.build.run import *
-from amaranth.build.run import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.build.run, use amaranth.build.run",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/cli.py b/nmigen/cli.py
deleted file mode 100644
index 54b99a5..0000000
--- a/nmigen/cli.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.cli import main, main_parser, main_runner
-from amaranth.cli import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.cli, use amaranth.cli",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/__init__.py b/nmigen/compat/__init__.py
deleted file mode 100644
index 648d245..0000000
--- a/nmigen/compat/__init__.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.compat import *
-
-
-import warnings
-warnings.warn("instead of nmigen.compat, use amaranth.compat",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/fhdl/__init__.py b/nmigen/compat/fhdl/__init__.py
deleted file mode 100644
index c7a2acc..0000000
--- a/nmigen/compat/fhdl/__init__.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.compat.fhdl import *
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.fhdl, use amaranth.compat.fhdl",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/fhdl/bitcontainer.py b/nmigen/compat/fhdl/bitcontainer.py
deleted file mode 100644
index 1e38f69..0000000
--- a/nmigen/compat/fhdl/bitcontainer.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.fhdl.bitcontainer import *
-from amaranth.compat.fhdl.bitcontainer import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.fhdl.bitcontainer, use amaranth.compat.fhdl.bitcontainer",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/fhdl/conv_output.py b/nmigen/compat/fhdl/conv_output.py
deleted file mode 100644
index 6d93d66..0000000
--- a/nmigen/compat/fhdl/conv_output.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.compat.fhdl.conv_output import *
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.fhdl.conv_output, use amaranth.compat.fhdl.conv_output",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/fhdl/decorators.py b/nmigen/compat/fhdl/decorators.py
deleted file mode 100644
index a285588..0000000
--- a/nmigen/compat/fhdl/decorators.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.fhdl.decorators import *
-from amaranth.compat.fhdl.decorators import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.fhdl.decorators, use amaranth.compat.fhdl.decorators",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/fhdl/module.py b/nmigen/compat/fhdl/module.py
deleted file mode 100644
index c6df57c..0000000
--- a/nmigen/compat/fhdl/module.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.fhdl.module import *
-from amaranth.compat.fhdl.module import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.fhdl.module, use amaranth.compat.fhdl.module",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/fhdl/specials.py b/nmigen/compat/fhdl/specials.py
deleted file mode 100644
index 5c1e082..0000000
--- a/nmigen/compat/fhdl/specials.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.fhdl.specials import *
-from amaranth.compat.fhdl.specials import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.fhdl.specials, use amaranth.compat.fhdl.specials",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/fhdl/structure.py b/nmigen/compat/fhdl/structure.py
deleted file mode 100644
index eae4a3f..0000000
--- a/nmigen/compat/fhdl/structure.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.fhdl.structure import *
-from amaranth.compat.fhdl.structure import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.fhdl.structure, use amaranth.compat.fhdl.structure",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/fhdl/verilog.py b/nmigen/compat/fhdl/verilog.py
deleted file mode 100644
index f12add0..0000000
--- a/nmigen/compat/fhdl/verilog.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.compat.fhdl.verilog import *
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.fhdl.verilog, use amaranth.compat.fhdl.verilog",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/genlib/__init__.py b/nmigen/compat/genlib/__init__.py
deleted file mode 100644
index 8ab81f2..0000000
--- a/nmigen/compat/genlib/__init__.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.compat.genlib import *
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.genlib, use amaranth.compat.genlib",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/genlib/cdc.py b/nmigen/compat/genlib/cdc.py
deleted file mode 100644
index 61fb8bc..0000000
--- a/nmigen/compat/genlib/cdc.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.genlib.cdc import *
-from amaranth.compat.genlib.cdc import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.genlib.cdc, use amaranth.compat.genlib.cdc",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/genlib/coding.py b/nmigen/compat/genlib/coding.py
deleted file mode 100644
index 51188ad..0000000
--- a/nmigen/compat/genlib/coding.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.genlib.coding import *
-from amaranth.compat.genlib.coding import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.genlib.coding, use amaranth.compat.genlib.coding",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/genlib/fifo.py b/nmigen/compat/genlib/fifo.py
deleted file mode 100644
index 1760205..0000000
--- a/nmigen/compat/genlib/fifo.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.genlib.fifo import *
-from amaranth.compat.genlib.fifo import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.genlib.fifo, use amaranth.compat.genlib.fifo",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/genlib/fsm.py b/nmigen/compat/genlib/fsm.py
deleted file mode 100644
index 7dc81f4..0000000
--- a/nmigen/compat/genlib/fsm.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.genlib.fsm import *
-from amaranth.compat.genlib.fsm import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.genlib.fsm, use amaranth.compat.genlib.fsm",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/genlib/record.py b/nmigen/compat/genlib/record.py
deleted file mode 100644
index 6cd5b23..0000000
--- a/nmigen/compat/genlib/record.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.compat.genlib.record import *
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.genlib.record, use amaranth.compat.genlib.record",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/genlib/resetsync.py b/nmigen/compat/genlib/resetsync.py
deleted file mode 100644
index 7577cae..0000000
--- a/nmigen/compat/genlib/resetsync.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.genlib.resetsync import *
-from amaranth.compat.genlib.resetsync import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.genlib.resetsync, use amaranth.compat.genlib.resetsync",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/genlib/roundrobin.py b/nmigen/compat/genlib/roundrobin.py
deleted file mode 100644
index 72f1675..0000000
--- a/nmigen/compat/genlib/roundrobin.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.genlib.roundrobin import *
-from amaranth.compat.genlib.roundrobin import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.genlib.roundrobin, use amaranth.compat.genlib.roundrobin",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/compat/sim/__init__.py b/nmigen/compat/sim/__init__.py
deleted file mode 100644
index 529cceb..0000000
--- a/nmigen/compat/sim/__init__.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.compat.sim import *
-from amaranth.compat.sim import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.compat.sim, use amaranth.compat.sim",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/hdl/__init__.py b/nmigen/hdl/__init__.py
deleted file mode 100644
index 5a2fa04..0000000
--- a/nmigen/hdl/__init__.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.hdl import *
-from amaranth.hdl import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.hdl, use amaranth.hdl",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/hdl/ast.py b/nmigen/hdl/ast.py
deleted file mode 100644
index b743345..0000000
--- a/nmigen/hdl/ast.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.hdl.ast import *
-from amaranth.hdl.ast import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.hdl.ast, use amaranth.hdl.ast",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/hdl/cd.py b/nmigen/hdl/cd.py
deleted file mode 100644
index 8e8f265..0000000
--- a/nmigen/hdl/cd.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.hdl.cd import *
-from amaranth.hdl.cd import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.hdl.cd, use amaranth.hdl.cd",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/hdl/dsl.py b/nmigen/hdl/dsl.py
deleted file mode 100644
index b96627b..0000000
--- a/nmigen/hdl/dsl.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.hdl.dsl import *
-from amaranth.hdl.dsl import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.hdl.dsl, use amaranth.hdl.dsl",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/hdl/ir.py b/nmigen/hdl/ir.py
deleted file mode 100644
index 74a4833..0000000
--- a/nmigen/hdl/ir.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.hdl.ir import *
-from amaranth.hdl.ir import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.hdl.ir, use amaranth.hdl.ir",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/hdl/mem.py b/nmigen/hdl/mem.py
deleted file mode 100644
index d3df2ae..0000000
--- a/nmigen/hdl/mem.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.hdl.mem import *
-from amaranth.hdl.mem import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.hdl.mem, use amaranth.hdl.mem",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/hdl/rec.py b/nmigen/hdl/rec.py
deleted file mode 100644
index e8b822d..0000000
--- a/nmigen/hdl/rec.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.hdl.rec import *
-from amaranth.hdl.rec import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.hdl.rec, use amaranth.hdl.rec",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/hdl/xfrm.py b/nmigen/hdl/xfrm.py
deleted file mode 100644
index f182ee2..0000000
--- a/nmigen/hdl/xfrm.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.hdl.xfrm import *
-from amaranth.hdl.xfrm import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.hdl.xfrm, use amaranth.hdl.xfrm",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/lib/__init__.py b/nmigen/lib/__init__.py
deleted file mode 100644
index 413d959..0000000
--- a/nmigen/lib/__init__.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.lib import *
-
-
-import warnings
-warnings.warn("instead of nmigen.lib, use amaranth.lib",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/lib/cdc.py b/nmigen/lib/cdc.py
deleted file mode 100644
index bc23f22..0000000
--- a/nmigen/lib/cdc.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.lib.cdc import *
-from amaranth.lib.cdc import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.lib.cdc, use amaranth.lib.cdc",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/lib/coding.py b/nmigen/lib/coding.py
deleted file mode 100644
index 07a6fbb..0000000
--- a/nmigen/lib/coding.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.lib.coding import *
-from amaranth.lib.coding import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.lib.coding, use amaranth.lib.coding",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/lib/fifo.py b/nmigen/lib/fifo.py
deleted file mode 100644
index ea0d578..0000000
--- a/nmigen/lib/fifo.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.lib.fifo import *
-from amaranth.lib.fifo import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.lib.fifo, use amaranth.lib.fifo",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/lib/io.py b/nmigen/lib/io.py
deleted file mode 100644
index 7cc0e77..0000000
--- a/nmigen/lib/io.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.lib.io import *
-from amaranth.lib.io import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.lib.io, use amaranth.lib.io",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/lib/scheduler.py b/nmigen/lib/scheduler.py
deleted file mode 100644
index a8ead3b..0000000
--- a/nmigen/lib/scheduler.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.lib.scheduler import *
-from amaranth.lib.scheduler import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.lib.scheduler, use amaranth.lib.scheduler",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/rpc.py b/nmigen/rpc.py
deleted file mode 100644
index aa1fbec..0000000
--- a/nmigen/rpc.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.rpc import *
-from amaranth.rpc import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.rpc, use amaranth.rpc",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/sim/__init__.py b/nmigen/sim/__init__.py
deleted file mode 100644
index 7335701..0000000
--- a/nmigen/sim/__init__.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.sim import *
-from amaranth.sim import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.sim, use amaranth.sim",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/sim/core.py b/nmigen/sim/core.py
deleted file mode 100644
index fb428e5..0000000
--- a/nmigen/sim/core.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.sim.core import *
-from amaranth.sim.core import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.sim.core, use amaranth.sim.core",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/sim/pysim.py b/nmigen/sim/pysim.py
deleted file mode 100644
index f13d634..0000000
--- a/nmigen/sim/pysim.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.sim.pysim import *
-from amaranth.sim.pysim import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.sim.pysim, use amaranth.sim.pysim",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/test/__init__.py b/nmigen/test/__init__.py
deleted file mode 100644
index 4417ea1..0000000
--- a/nmigen/test/__init__.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.test import *
-
-
-import warnings
-warnings.warn("instead of nmigen.test, use amaranth.test",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/test/utils.py b/nmigen/test/utils.py
deleted file mode 100644
index 59aeaaa..0000000
--- a/nmigen/test/utils.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.test.utils import *
-from amaranth.test.utils import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.test.utils, use amaranth.test.utils",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/tracer.py b/nmigen/tracer.py
deleted file mode 100644
index d0ae2af..0000000
--- a/nmigen/tracer.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.tracer import *
-from amaranth.tracer import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.tracer, use amaranth.tracer",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/utils.py b/nmigen/utils.py
deleted file mode 100644
index af50d65..0000000
--- a/nmigen/utils.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.utils import *
-from amaranth.utils import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.utils, use amaranth.utils",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/__init__.py b/nmigen/vendor/__init__.py
deleted file mode 100644
index d0a733c..0000000
--- a/nmigen/vendor/__init__.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from amaranth.vendor import *
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor, use amaranth.vendor",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/intel.py b/nmigen/vendor/intel.py
deleted file mode 100644
index c1dc33c..0000000
--- a/nmigen/vendor/intel.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.intel import *
-from amaranth.vendor.intel import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.intel, use amaranth.vendor.intel",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/lattice_ecp5.py b/nmigen/vendor/lattice_ecp5.py
deleted file mode 100644
index f53aa56..0000000
--- a/nmigen/vendor/lattice_ecp5.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.lattice_ecp5 import *
-from amaranth.vendor.lattice_ecp5 import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.lattice_ecp5, use amaranth.vendor.lattice_ecp5",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/lattice_ice40.py b/nmigen/vendor/lattice_ice40.py
deleted file mode 100644
index a4f142e..0000000
--- a/nmigen/vendor/lattice_ice40.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.lattice_ice40 import *
-from amaranth.vendor.lattice_ice40 import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.lattice_ice40, use amaranth.vendor.lattice_ice40",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/lattice_machxo2.py b/nmigen/vendor/lattice_machxo2.py
deleted file mode 100644
index 9752407..0000000
--- a/nmigen/vendor/lattice_machxo2.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.lattice_machxo2 import *
-from amaranth.vendor.lattice_machxo2 import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.lattice_machxo2, use amaranth.vendor.lattice_machxo2",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/lattice_machxo_2_3l.py b/nmigen/vendor/lattice_machxo_2_3l.py
deleted file mode 100644
index 5275a0a..0000000
--- a/nmigen/vendor/lattice_machxo_2_3l.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.lattice_machxo_2_3l import *
-from amaranth.vendor.lattice_machxo_2_3l import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.lattice_machxo_2_3l, use amaranth.vendor.lattice_machxo_2_3l",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/quicklogic.py b/nmigen/vendor/quicklogic.py
deleted file mode 100644
index d09ef96..0000000
--- a/nmigen/vendor/quicklogic.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.quicklogic import *
-from amaranth.vendor.quicklogic import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.quicklogic, use amaranth.vendor.quicklogic",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/xilinx.py b/nmigen/vendor/xilinx.py
deleted file mode 100644
index d744d61..0000000
--- a/nmigen/vendor/xilinx.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.xilinx import *
-from amaranth.vendor.xilinx import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.xilinx, use amaranth.vendor.xilinx",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/xilinx_7series.py b/nmigen/vendor/xilinx_7series.py
deleted file mode 100644
index 3e92b30..0000000
--- a/nmigen/vendor/xilinx_7series.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.xilinx_7series import *
-from amaranth.vendor.xilinx_7series import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.xilinx_7series, use amaranth.vendor.xilinx_7series",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/xilinx_spartan_3_6.py b/nmigen/vendor/xilinx_spartan_3_6.py
deleted file mode 100644
index c689e79..0000000
--- a/nmigen/vendor/xilinx_spartan_3_6.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.xilinx_spartan_3_6 import *
-from amaranth.vendor.xilinx_spartan_3_6 import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.xilinx_spartan_3_6, use amaranth.vendor.xilinx_spartan_3_6",
-              DeprecationWarning, stacklevel=2)
diff --git a/nmigen/vendor/xilinx_ultrascale.py b/nmigen/vendor/xilinx_ultrascale.py
deleted file mode 100644
index d38221b..0000000
--- a/nmigen/vendor/xilinx_ultrascale.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from amaranth.vendor.xilinx_ultrascale import *
-from amaranth.vendor.xilinx_ultrascale import __all__
-
-
-import warnings
-warnings.warn("instead of nmigen.vendor.xilinx_ultrascale, use amaranth.vendor.xilinx_ultrascale",
-              DeprecationWarning, stacklevel=2)
diff --git a/setup.py b/setup.py
index 197fdd3..c658c53 100644
--- a/setup.py
+++ b/setup.py
@@ -54,7 +54,6 @@ setup(
     entry_points={
         "console_scripts": [
             "amaranth-rpc = amaranth.rpc:main",
-            "nmigen-rpc = nmigen.rpc:main",
         ]
     },
     project_urls={