diff --git a/hooks/pip-build-hook.sh b/hooks/pip-build-hook.sh
index a3ebe311d..31e06909b 100644
--- a/hooks/pip-build-hook.sh
+++ b/hooks/pip-build-hook.sh
@@ -5,14 +5,6 @@ pipBuildPhase() {
     echo "Executing pipBuildPhase"
     runHook preBuild
 
-    # Prefer using setup.py to avoid build-system dependencies if we have a setup.py
-    if [ -z "${dontPreferSetupPy-}" ]; then
-      if test -e setup.py && test -e pyproject.toml; then
-        echo "Removing pyproject.toml..."
-        rm -f pyproject.toml
-      fi
-    fi
-
     mkdir -p dist
     echo "Creating a wheel..."
     @pythonInterpreter@ -m pip wheel --verbose --no-index --no-deps --no-clean --no-build-isolation --wheel-dir dist .
diff --git a/overrides.nix b/overrides.nix
index 0fc41f6bc..9bdbc924c 100644
--- a/overrides.nix
+++ b/overrides.nix
@@ -52,7 +52,7 @@ self: super:
 
   anyio = super.anyio.overridePythonAttrs (old: {
     postPatch = ''
-      substituteInPlace setup.py --replace 'setup()' 'setup(version="${old.version}")'
+      substituteInPlace setup.py --replace 'setup()' 'setup(version=${old.version}")'
     '';
   });
 
@@ -90,6 +90,10 @@ self: super:
     }
   );
 
+  backcall = super.backcall.overridePythonAttrs (old: {
+    buildInputs = old.buildInputs or [ ] ++ [ self.flit-core ];
+  });
+
   backports-entry-points-selectable = super.backports-entry-points-selectable.overridePythonAttrs (old: {
     postPatch = ''
       substituteInPlace setup.py --replace \
@@ -118,12 +122,6 @@ self: super:
     }
   );
 
-  black = super.black.overridePythonAttrs (
-    old: {
-      dontPreferSetupPy = true;
-    }
-  );
-
   borgbackup = super.borgbackup.overridePythonAttrs (
     old: {
       BORG_OPENSSL_PREFIX = pkgs.openssl.dev;
@@ -174,11 +172,13 @@ self: super:
     }
   );
 
-  cheroot = super.cheroot.overridePythonAttrs (
-    old: {
-      dontPreferSetupPy = true;
-    }
-  );
+  cleo = super.cleo.overridePythonAttrs (old: {
+    buildInputs = old.buildInputs or [ ] ++ [ self.poetry-core ];
+  });
+
+  clikit = super.clikit.overridePythonAttrs (old: {
+    buildInputs = old.buildInputs or [ ] ++ [ self.poetry-core ];
+  });
 
   cloudflare = super.cloudflare.overridePythonAttrs (
     old: {
@@ -199,10 +199,14 @@ self: super:
       buildInputs = (old.buildInputs or [ ]) ++ [
         self.toml
       ];
+    }
+  );
 
-      postPatch = ''
-        substituteInPlace setup.py --replace 'setuptools.setup()' 'setuptools.setup(version="${old.version}")'
-      '';
+  crashtest = super.crashtest.overridePythonAttrs (
+    old: {
+      buildInputs = (old.buildInputs or [ ]) ++ [
+        self.poetry-core
+      ];
     }
   );
 
@@ -563,6 +567,10 @@ self: super:
     }
   );
 
+  html5lib = super.html5lib.overridePythonAttrs (old: {
+    buildInputs = old.buildInputs or [ ] ++ [ self.flit-core ];
+  });
+
   httplib2 = super.httplib2.overridePythonAttrs (old: {
     propagatedBuildInputs = (old.propagatedBuildInputs or [ ]) ++ [ self.pyparsing ];
   });
@@ -636,22 +644,12 @@ self: super:
     old: {
       propagatedBuildInputs = (old.propagatedBuildInputs or [ ]) ++ lib.optional self.python.isPy2 self.pathlib2;
 
-      # disable the removal of pyproject.toml, required because of setuptools_scm
-      dontPreferSetupPy = true;
-
       postPatch = old.postPatch or "" + (lib.optionalString ((old.format or "") != "wheel") ''
         substituteInPlace setup.py --replace 'setuptools.setup()' 'setuptools.setup(version="${old.version}")'
       '');
     }
   );
 
-  importlib-resources = super.importlib-resources.overridePythonAttrs (
-    old: {
-      # disable the removal of pyproject.toml, required because of setuptools_scm
-      dontPreferSetupPy = true;
-    }
-  );
-
   intreehooks = super.intreehooks.overridePythonAttrs (
     old: {
       doCheck = false;
@@ -670,11 +668,13 @@ self: super:
       buildInputs = (old.buildInputs or [ ]) ++ [
         self.toml
       ];
-      # disable the removal of pyproject.toml, required because of setuptools_scm
-      dontPreferSetupPy = true;
     }
   );
 
+  jeepney = super.jeepney.overridePythonAttrs (old: {
+    buildInputs = old.buildInputs or [ ] ++ [ self.flit-core ];
+  });
+
   jira = super.jira.overridePythonAttrs (
     old: {
       inherit (pkgs.python3Packages.jira) patches;
@@ -706,12 +706,6 @@ self: super:
     }
   );
 
-  jsonpickle = super.jsonpickle.overridePythonAttrs (
-    old: {
-      dontPreferSetupPy = true;
-    }
-  );
-
   jsonslicer = super.jsonslicer.overridePythonAttrs (old: {
     nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ [ pkgs.pkgconfig ];
     buildInputs = (old.buildInputs or [ ]) ++ [ pkgs.yajl ];
@@ -768,10 +762,6 @@ self: super:
     propagatedBuildInputs = [ pkgs.libvirt ];
   });
 
-  licensecheck = super.licensecheck.overridePythonAttrs (old: {
-    dontPreferSetupPy = true;
-  });
-
   llvmlite = super.llvmlite.overridePythonAttrs (
     old:
     let
@@ -1087,6 +1077,10 @@ self: super:
     '';
   });
 
+  pastel = super.pastel.overridePythonAttrs (old: {
+    buildInputs = old.buildInputs or [ ] ++ [ self.poetry-core ];
+  });
+
   paramiko = super.paramiko.overridePythonAttrs (old: {
     doCheck = false; # requires networking
   });
@@ -1152,8 +1146,6 @@ self: super:
       buildInputs = (old.buildInputs or [ ]) ++ [
         self.toml
       ];
-      # disable the removal of pyproject.toml, required because of setuptools_scm
-      dontPreferSetupPy = true;
     }
   );
 
@@ -1816,8 +1808,6 @@ self: super:
       buildInputs = (old.buildInputs or [ ]) ++ [
         self.toml
       ];
-      # disable the removal of pyproject.toml, required because of setuptools_scm
-      dontPreferSetupPy = true;
     }
   );
 
@@ -2226,13 +2216,6 @@ self: super:
     }
   );
 
-  lazy-object-proxy = super.lazy-object-proxy.overridePythonAttrs (
-    old: {
-      # disable the removal of pyproject.toml, required because of setuptools_scm
-      dontPreferSetupPy = true;
-    }
-  );
-
   pendulum = super.pendulum.overridePythonAttrs (old: {
     # Technically incorrect, but fixes the build error..
     preInstall = lib.optionalString stdenv.isLinux ''
@@ -2240,6 +2223,10 @@ self: super:
     '';
   });
 
+  ptyprocess = super.ptyprocess.overridePythonAttrs (old: {
+    buildInputs = old.buildInputs or [ ] ++ [ self.flit-core ];
+  });
+
   pygraphviz = super.pygraphviz.overridePythonAttrs (old: {
     nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ [ pkgs.pkg-config ];
     buildInputs = (old.buildInputs or [ ]) ++ [ pkgs.graphviz ];
@@ -2273,6 +2260,10 @@ self: super:
     buildInputs = (old.buildInputs or [ ]) ++ [ self.pbr ];
   });
 
+  tomlkit = super.tomlkit.overridePythonAttrs (old: {
+    buildInputs = old.buildInputs or [ ] ++ [ self.poetry-core ];
+  });
+
   tomli = super.tomli.overridePythonAttrs (old: {
     nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ [ self.flit-core ];
   });