diff --git a/.github/PULL_REQUEST_TEMPLATE/4_pr.yaml b/.github/PULL_REQUEST_TEMPLATE/4_pr.yaml
index efc7bd3..496b8ce 100644
--- a/.github/PULL_REQUEST_TEMPLATE/4_pr.yaml
+++ b/.github/PULL_REQUEST_TEMPLATE/4_pr.yaml
@@ -5,7 +5,7 @@
      through the checklist. -->
 
 - [ ] Add a file to the `news` directory ([using the template]([[ repo.html_url ]]/blob/main/news/TEMPLATE)) for the next release's release notes?
-     <!-- All "significant" changes should get an entry:
+     <!-- All "significant" changes should get an entry
             - user-facing changes or enhancements
             - bug fixes
             - deprecations
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index efcf35a..7796aab 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -3,15 +3,15 @@
 ## With `pixi`
 
 1. Make sure `pixi` and `git` are installed. [Instructions for `pixi`](https://pixi.sh/latest/installation/).
-2. Clone this repository. 
+2. Clone this repository.
 ```
 git clone https://github.com/conda-incubator/conda-self
 ```
-3. Change to that directory. 
+3. Change to that directory.
 ```
 cd conda-self
 ```
-4. Run the help message. 
+4. Run the help message.
 ```
 pixi run conda self --help
 ```
@@ -25,19 +25,19 @@ pixi run conda create -p .pixi/envs/demo conda pip
 2. `conda-spawn` is included in the pixi configuration, which you can use to pseudo-activate the environment:
 ```
 pixi run conda spawn ./.pixi/envs/demo
-```  
+```
 If not, simply activate the environment.
 ```
 conda activate .pixi/envs/demo
 ```
-3. Install `conda-self` in it. 
+3. Install `conda-self` in it.
 ```
 pip install -e .
 ```
 4. Play with `python -m conda self`.
    1. `python -m conda self update`
    2. `python -m conda self install numpy`
-   3. `python -m conda self install conda-rich` 
+   3. `python -m conda self install conda-rich`
    4. `python -m conda self remove conda-rich`
 
 ### Included Tasks
@@ -52,7 +52,7 @@ pip install -e .
 ```
 git clone https://github.com/conda-incubator/conda-self
 ```
-2. Change to that directory. 
+2. Change to that directory.
 ```
 cd conda-self
 ```
@@ -74,4 +74,4 @@ python -m pip install -e . --no-deps
    1. `python -m conda self install numpy`
    2. `python -m conda self install conda-rich`
    3. `python -m conda self update`
-   4. `python -m conda self remove conda-rich`
\ No newline at end of file
+   4. `python -m conda self remove conda-rich`
diff --git a/conda_self/query.py b/conda_self/query.py
index 0247820..d67bf8b 100644
--- a/conda_self/query.py
+++ b/conda_self/query.py
@@ -3,7 +3,6 @@
 from __future__ import annotations
 
 import sys
-from functools import cache
 from typing import TYPE_CHECKING
 
 from conda.base.context import context
@@ -62,15 +61,20 @@ def latest(
     return best
 
 
-@cache
 def permanent_dependencies() -> set[str]:
     """Get the full list of dependencies for all the permanent packages."""
-    installed = PrefixData(sys.prefix)
+    # In some dev environments, conda-self is installed as a PyPI package
+    # and does not have its conda-meta/conda-self-*.json entry, which makes it
+    # invisible to PrefixData()... unless we enable interoperability.
+    installed = PrefixData(sys.prefix, interoperability=True)
     prefix_graph = PrefixGraph(installed.iter_records())
 
     packages = []
     for pkg in PERMANENT_PACKAGES:
         node = next((rec for rec in prefix_graph.records if rec.name == pkg), None)
         if node:
-            packages.extend([record.name for record in prefix_graph.all_ancestors(node)])
+            packages.append(node.name)
+            packages.extend(
+                [record.name for record in prefix_graph.all_ancestors(node)]
+            )
     return set(packages)
diff --git a/tests/conftest.py b/tests/conftest.py
index c8dd9dc..4d69e8f 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1 +1,7 @@
 from conda.testing.fixtures import conda_cli  # noqa
+
+pytest_plugins = (
+    # Add testing fixtures and internal pytest plugins here
+    "conda.testing",
+    "conda.testing.fixtures",
+)
diff --git a/tests/test_cli_reset.py b/tests/test_cli_reset.py
index 57fa685..fb0f869 100644
--- a/tests/test_cli_reset.py
+++ b/tests/test_cli_reset.py
@@ -1,6 +1,8 @@
+import subprocess
 import sys
 
 from conda.core.prefix_data import PrefixData
+from conda.testing.fixtures import TmpEnvFixture
 
 
 def test_help(conda_cli):
@@ -23,3 +25,24 @@ def test_reset(conda_cli, tmp_path):
     )
 
     assert len(tuple(PrefixData(tmp_prefix).query("numpy"))) == 0
+
+
+def test_reset_conda_self_present(tmp_env: TmpEnvFixture):
+    with tmp_env("conda", "conda-self") as prefix:
+        # platform is "win32" even in win64 machines
+        if sys.platform == "win32":
+            python_bin = prefix / "python.exe"
+        else:
+            python_bin = prefix / "bin" / "python"
+
+        PrefixData._cache_.clear()
+        # Note: Running python -m conda self incidentally loads 'conda_self' from
+        # the repo because the working directory happens to contain it. We should
+        # actually 'pip install .' the repo but in this case we are lucky and don't
+        # need to.
+        subprocess.run([str(python_bin), "-m", "conda", "self", "reset"], check=True)
+
+        # make sure conda-self didn't remove conda
+        assert PrefixData(prefix).get("conda")
+        # make sure conda-self didn't remove itself
+        assert PrefixData(prefix).get("conda-self")
diff --git a/tests/test_query.py b/tests/test_query.py
new file mode 100644
index 0000000..121afe7
--- /dev/null
+++ b/tests/test_query.py
@@ -0,0 +1,7 @@
+from conda_self.constants import PERMANENT_PACKAGES
+from conda_self.query import permanent_dependencies
+
+
+def test_permanent_dependencies():
+    must_keep = permanent_dependencies()
+    assert set(PERMANENT_PACKAGES).issubset(must_keep)