diff --git a/make/py-topdir.mk b/make/py-topdir.mk
index a58e1207..acbcb8aa 100644
--- a/make/py-topdir.mk
+++ b/make/py-topdir.mk
@@ -1,10 +1,10 @@
-include $(JWBDIR)/make/ldlibpath.mk
+include $(JWBDIR)/make/projects.mk
 
 TD_GENERATE_FILES           += pyproject.toml
 
 PY_CHECK_EXCLUDE            ?=
 
-MYPY_CONFIG_PATH             = $(subst :,:$$MYPY_CONFIG_FILE_DIR/,:$(PYTHONPATH))
+MYPY_CONFIG_PATH             = $(shell $(JW_PKG_PY) --topdir-format relative projects pythonpath --prefix '$$MYPY_CONFIG_FILE_DIR/' $(PROJECT))
 MYPY_PATH_DIRECTIVE          = mypy_path = "$(MYPY_CONFIG_PATH)"
 
 ifndef PY_CHECK_ROOTS
diff --git a/src/python/jw/pkg/App.py b/src/python/jw/pkg/App.py
index c7775ae5..a018fddb 100644
--- a/src/python/jw/pkg/App.py
+++ b/src/python/jw/pkg/App.py
@@ -83,6 +83,8 @@ class App(Base):
         match fmt:
             case 'unaltered':
                 return path
+            case 'relative':
+                return os.path.relpath(path)
             case None | 'absolute':
                 return os.path.abspath(path)
             case _:
@@ -135,6 +137,8 @@ class App(Base):
                 return os.path.abspath(pd)
             if self.__topdir_fmt == 'unaltered':
                 return pd
+            if self.__topdir_fmt == 'relative':
+                return os.path.relpath(pd, self.__pretty_topdir)
             if name == self.__top_name:
                 return self.__pretty_topdir
             raise NotImplementedError(
@@ -151,7 +155,10 @@ class App(Base):
             if os.path.isdir(path):
                 ret = format_pd(name, pd, pretty)
                 if sd and sd[0] != '/':
-                    ret += '/'
+                    if ret == '.':
+                        ret = ''
+                    else:
+                        ret += '/'
                 ret += sd
                 return ret
         for ret in search_absdirs:
@@ -345,7 +352,7 @@ class App(Base):
             default = 'absolute',
             help = (
                 'Output references to topdir as one of "make:<var-name>", '
-                '"unaltered", "absolute". Absolute topdir by default'
+                '"unaltered", "relative", "absolute". Absolute topdir by default'
             ),
         )
         parser.add_argument(
diff --git a/src/python/jw/pkg/cmds/projects/CmdPythonpath.py b/src/python/jw/pkg/cmds/projects/CmdPythonpath.py
index 9ddd6463..1b02a83b 100644
--- a/src/python/jw/pkg/cmds/projects/CmdPythonpath.py
+++ b/src/python/jw/pkg/cmds/projects/CmdPythonpath.py
@@ -1,8 +1,9 @@
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
 from ...App import Scope
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -16,6 +17,25 @@ class CmdPythonpath(Cmd):  # export
 
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
+        parser.add_argument(
+            '--subdir',
+            action = 'append',
+            help = (
+                'Directories to look for relative to the '
+                'respective project root directory'
+            ),
+            default = ['src/python', 'tools/python'],
+        )
+        parser.add_argument(
+            '--delimiter',
+            default = ':',
+            help = 'Delimiter between paths',
+        )
+        parser.add_argument(
+            '--prefix',
+            help = 'Prefix to prepend before every path component',
+            dest = 'path_component_prefix',
+        )
         parser.add_argument('module', help = 'Modules', nargs = '*')
 
     async def _run(self, args: Namespace) -> None:
@@ -29,8 +49,10 @@ class CmdPythonpath(Cmd):  # export
         )
         out = []
         for m in deps:
-            path = self.app.find_dir(m, ['src/python', 'tools/python'])
+            path = self.app.find_dir(m, args.subdir)
             if path is not None:
+                if args.path_component_prefix is not None:
+                    path = f'{args.path_component_prefix}{path}'
                 out.append(path)
         if out:
-            print(':'.join(out))
+            print(args.delimiter.join(out))
diff --git a/src/python/jw/pkg/cmds/projects/CmdPythonpathOrig.py b/src/python/jw/pkg/cmds/projects/CmdPythonpathOrig.py
deleted file mode 100644
index 8a7bb2c8..00000000
--- a/src/python/jw/pkg/cmds/projects/CmdPythonpathOrig.py
+++ /dev/null
@@ -1,38 +0,0 @@
-from __future__ import annotations
-import os
-
-from ...App import Scope
-from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
-
-if TYPE_CHECKING:
-    from argparse import ArgumentParser, Namespace
-
-class CmdPythonpathOrig(Cmd):  # export
-
-    def __init__(self, parent: Parent) -> None:
-        super().__init__(parent, 'pythonpath_orig', help = 'pythonpath')
-
-    def add_arguments(self, parser: ArgumentParser) -> None:
-        super().add_arguments(parser)
-        parser.add_argument('module', nargs = '*', help = 'Modules')
-
-    async def _run(self, args: Namespace) -> None:
-        deps = self.app.get_project_refs(
-            args.module,
-            ['pkg.requires.jw'],
-            ['run', 'build'],
-            scope = Scope.Subtree,
-            add_self = True,
-            names_only = True,
-        )
-        r = ''
-        for m in deps:
-            pd = self.app.find_dir(m, pretty = False)
-            if pd is None:
-                continue
-            for subdir in ['src/python', 'tools/python']:
-                cand = pd + '/' + subdir
-                if os.path.isdir(cand):
-                    r = r + ':' + cand
-        print(r[1:])