diff --git a/pkgs/development/python-modules/birch/default.nix b/pkgs/development/python-modules/birch/default.nix
new file mode 100644
index 000000000000..3afd6d3df06a
--- /dev/null
+++ b/pkgs/development/python-modules/birch/default.nix
@@ -0,0 +1,60 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, setuptools
+, strct
+, pytestCheckHook
+, pyyaml
+}:
+
+buildPythonPackage rec {
+  pname = "birch";
+  version = "0.0.35";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "shaypal5";
+    repo = "birch";
+    rev = "v${version}";
+    hash = "sha256-KdQZzQJvJ+logpcLQfaqqEEZJ/9VmNTQX/a4v0oBC98=";
+  };
+
+  postPatch = ''
+    substituteInPlace pytest.ini \
+      --replace  \
+        "--cov" \
+        "#--cov"
+  '';
+
+  nativeBuildInputs = [
+    setuptools
+  ];
+
+  propagatedBuildInputs = [
+    strct
+  ];
+
+  pythonImportsCheck = [
+    "birch"
+    "birch.casters"
+    "birch.exceptions"
+    "birch.paths"
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+    pyyaml
+  ];
+
+  preCheck = ''
+    export HOME="$(mktemp -d)"
+  '';
+
+
+  meta = with lib; {
+    description = "Simple hierarchical configuration for Python packages";
+    homepage = "https://github.com/shaypal5/birch";
+    license = licenses.mit;
+    maintainers = with maintainers; [ pbsds ];
+  };
+}
diff --git a/pkgs/development/python-modules/cachier/default.nix b/pkgs/development/python-modules/cachier/default.nix
index 2a1fe461d51c..28159a16454c 100644
--- a/pkgs/development/python-modules/cachier/default.nix
+++ b/pkgs/development/python-modules/cachier/default.nix
@@ -1,29 +1,31 @@
 { lib
 , buildPythonPackage
 , pythonOlder
-, fetchPypi
+, fetchFromGitHub
 , pythonRelaxDepsHook
 , setuptools
 , watchdog
 , portalocker
-, pathtools
 , pytestCheckHook
 , pymongo
 , dnspython
 , pymongo-inmemory
 , pandas
+, birch
 }:
 
 buildPythonPackage rec {
   pname = "cachier";
-  version = "2.2.1";
-  format = "setuptools";
+  version = "2.2.2";
+  pyproject = true;
 
   disabled = pythonOlder "3.8";
 
-  src = fetchPypi {
-    inherit pname version;
-    hash = "sha256-nm98LT87Z7yErKvIqMp93OEX9TDojqqtItgryHgSQJQ=";
+  src = fetchFromGitHub {
+    owner = "python-cachier";
+    repo = "cachier";
+    rev = "v${version}";
+    hash = "sha256-zUZqT4SIwZRqhRS/wHIzIYVULnp5aYcytCQd17T0D/4=";
   };
 
   pythonRemoveDeps = [ "setuptools" ];
@@ -36,7 +38,6 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     watchdog
     portalocker
-    pathtools
   ];
 
   preCheck = ''
@@ -52,6 +53,7 @@ buildPythonPackage rec {
     dnspython
     pymongo-inmemory
     pandas
+    birch
   ];
 
   disabledTests = [
diff --git a/pkgs/development/python-modules/strct/default.nix b/pkgs/development/python-modules/strct/default.nix
new file mode 100644
index 000000000000..7244002d4169
--- /dev/null
+++ b/pkgs/development/python-modules/strct/default.nix
@@ -0,0 +1,52 @@
+{ lib
+, fetchFromGitHub
+, buildPythonPackage
+, setuptools
+, pytestCheckHook
+, sortedcontainers
+}:
+
+buildPythonPackage rec {
+  pname = "strct";
+  version = "0.0.32";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "shaypal5";
+    repo = "strct";
+    rev = "v${version}";
+    hash = "sha256-ctafvdfSOdp7tlCUYg7d5XTXR1qBcWvOVtGtNUnhYIw=";
+  };
+
+  postPatch = ''
+    substituteInPlace pytest.ini \
+      --replace  \
+        "--cov" \
+        "#--cov"
+  '';
+
+  nativeBuildInputs = [
+    setuptools
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+    sortedcontainers
+  ];
+
+  pythonImportsCheck = [
+    "strct"
+    "strct.dicts"
+    "strct.hash"
+    "strct.lists"
+    "strct.sets"
+    "strct.sortedlists"
+  ];
+
+  meta = with lib; {
+    description = "A small pure-python package for data structure related utility functions";
+    homepage = "https://github.com/shaypal5/strct";
+    license = licenses.mit;
+    maintainers = with maintainers; [ pbsds ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 021640390341..b00707ff4ad1 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1482,6 +1482,8 @@ self: super: with self; {
 
   bip32 = callPackage ../development/python-modules/bip32 { };
 
+  birch = callPackage ../development/python-modules/birch { };
+
   bitarray = callPackage ../development/python-modules/bitarray { };
 
   bitbox02 = callPackage ../development/python-modules/bitbox02 { };
@@ -13792,6 +13794,8 @@ self: super: with self; {
 
   strawberry-graphql = callPackage ../development/python-modules/strawberry-graphql { };
 
+  strct = callPackage ../development/python-modules/strct { };
+
   streamdeck = callPackage ../development/python-modules/streamdeck { };
 
   streaming-form-data = callPackage ../development/python-modules/streaming-form-data { };