diff --git a/charmcraft/bases.py b/charmcraft/bases.py
deleted file mode 100644
index c6af77e39..000000000
--- a/charmcraft/bases.py
+++ /dev/null
@@ -1,73 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# For further info, check https://github.com/canonical/charmcraft
-
-"""Logic dealing with bases."""
-
-from craft_application import util
-
-from charmcraft.models.charmcraft import Base
-from charmcraft.utils import get_os_platform
-
-
-def get_host_as_base() -> Base:
-    """Get host OS represented as Base.
-
-    The host OS name is translated to lower-case for consistency.
-
-    :returns: Base configuration matching host.
-    """
-    os_platform = get_os_platform()
-    host_arch = util.get_host_architecture()
-    name = os_platform.system.lower()
-    channel = os_platform.release
-
-    return Base(name=name, channel=channel, architectures=[host_arch])
-
-
-def check_if_base_matches_host(base: Base) -> tuple[bool, str | None]:
-    """Check if given base matches the host.
-
-    :param base: Base to check.
-
-    :returns: Tuple of bool indicating whether it is a match, with optional
-              reason if not a match.
-    """
-    host_base = get_host_as_base()
-    host_arch = host_base.architectures[0]
-
-    if host_base.name != base.name:
-        return False, f"name {base.name!r} does not match host {host_base.name!r}"
-
-    # For Ubuntu, MacOS and Windows, use the full version.
-    # For other OSes, use the major version only.
-
-    if host_base.name in ("ubuntu", "darwin", "windows"):
-        host_channel = host_base.channel
-    else:
-        host_channel = host_base.channel.split(".")[0]
-    if host_channel != base.channel:
-        return (
-            False,
-            f"channel {base.channel!r} does not match host {host_base.channel!r}",
-        )
-
-    if host_arch not in base.architectures:
-        return (
-            False,
-            f"host architecture {host_arch!r} not in base architectures {base.architectures!r}",
-        )
-
-    return True, None
diff --git a/tests/test_bases.py b/tests/test_bases.py
deleted file mode 100644
index be5743154..000000000
--- a/tests/test_bases.py
+++ /dev/null
@@ -1,96 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# For further info, check https://github.com/canonical/charmcraft
-
-
-from unittest.mock import patch
-
-import pytest
-
-from charmcraft.bases import check_if_base_matches_host, get_host_as_base
-from charmcraft.models.charmcraft import Base
-from charmcraft.utils import OSPlatform
-
-
-@pytest.fixture
-def mock_get_os_platform():
-    os_platform = OSPlatform(system="host-OS", release="host-CHANNEL", machine="host-ARCH")
-    with patch("charmcraft.bases.get_os_platform", return_value=os_platform) as mock_platform:
-        yield mock_platform
-
-
-@pytest.fixture
-def mock_get_host_architecture():
-    with patch(
-        "craft_application.util.get_host_architecture", return_value="host-ARCH"
-    ) as mock_host_arch:
-        yield mock_host_arch
-
-
-def test_get_host_as_base(mock_get_os_platform, mock_get_host_architecture):
-    assert get_host_as_base() == Base(
-        name="host-os",
-        channel="host-CHANNEL",
-        architectures=["host-ARCH"],
-    )
-
-
-def test_check_if_bases_matches_host_matches(mock_get_os_platform, mock_get_host_architecture):
-    base = Base(name="host-os", channel="host-CHANNEL", architectures=["host-ARCH"])
-    assert check_if_base_matches_host(base) == (True, None)
-
-    base = Base(
-        name="host-os",
-        channel="host-CHANNEL",
-        architectures=["other-ARCH", "host-ARCH"],
-    )
-    assert check_if_base_matches_host(base) == (True, None)
-
-
-def test_check_if_bases_matches_host_name_mismatch(
-    mock_get_os_platform, mock_get_host_architecture
-):
-    base = Base(name="test-other-os", channel="host-CHANNEL", architectures=["host-ARCH"])
-
-    assert check_if_base_matches_host(base) == (
-        False,
-        "name 'test-other-os' does not match host 'host-os'",
-    )
-
-
-def test_check_if_bases_matches_host_channel_mismatch(
-    mock_get_os_platform, mock_get_host_architecture
-):
-    base = Base(name="host-os", channel="other-CHANNEL", architectures=["host-ARCH"])
-
-    assert check_if_base_matches_host(base) == (
-        False,
-        "channel 'other-CHANNEL' does not match host 'host-CHANNEL'",
-    )
-
-
-def test_check_if_bases_matches_host_arch_mismatch(
-    mock_get_os_platform, mock_get_host_architecture
-):
-    base = Base(
-        name="host-os",
-        channel="host-CHANNEL",
-        architectures=["other-ARCH", "other-ARCH2"],
-    )
-
-    assert check_if_base_matches_host(base) == (
-        False,
-        "host architecture 'host-ARCH' not in base architectures ['other-ARCH', 'other-ARCH2']",
-    )