diff --git a/ci-support.sh b/ci-support.sh
index afca97492b460e75bb5e676230e9a8df9f8bf341..25ae673fa8722a35c366d3729395ca835672143c 100644
--- a/ci-support.sh
+++ b/ci-support.sh
@@ -611,7 +611,8 @@ function build_asv_html
   asv publish --html-dir doc/_build/html/benchmarks
 }
 
-function build_and_run_benchmarks {
+function build_and_run_benchmarks
+{
   setup_asv
   clone_results_repo
   run_asv
@@ -620,4 +621,14 @@ function build_and_run_benchmarks {
 
 # }}}
 
+# {{{ transfer_requirements_git_urls
+
+function transfer_requirements_git_urls()
+{
+  curl -L -O "${ci_support}transfer-requirements-git-urls"
+  ./transfer-requirements-git-urls "$@"
+}
+
+# }}}
+
 # vim: foldmethod=marker:sw=2
diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..3d66394d19b145c8311cc6d763b6648d2993a034
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,24 @@
+[flake8]
+ignore = E126,E127,E128,E123,E226,E241,E242,E265,E402,W503,E731
+max-line-length=85
+
+inline-quotes = "
+docstring-quotes = "
+multiline-quotes = """
+
+# enable-flake8-bugbear
+
+[wheel]
+universal = 1
+
+[mypy]
+ignore_missing_imports = True
+
+[mypy-pytools.mpiwrap]
+ignore_errors = True
+
+[mypy-pytools.persistent_dict]
+ignore_errors = True
+
+[mypy-pytools.stopwatch]
+ignore_errors = True
diff --git a/transfer-requirements-git-urls b/transfer-requirements-git-urls
new file mode 100755
index 0000000000000000000000000000000000000000..9f2a530c86bc1afdc6c29d8104b57000774b206d
--- /dev/null
+++ b/transfer-requirements-git-urls
@@ -0,0 +1,73 @@
+#! /usr/bin/env python3
+
+import sys
+import pathlib
+import re
+
+
+vcs_url_re = re.compile(
+        r"(git\+[a-z]+://[-a-zA-Z0-9./]+)"
+        "((?:@[-_a-zA-Z0-9]+)?)"
+        r"\#egg=([-a-zA-Z0-9_.]+)"
+        )
+
+
+def main():
+    import argparse
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument("from_file", metavar="FROM_REQ.TXT")
+    parser.add_argument("to_file", metavar="TO_REQ.TXT")
+    args = parser.parse_args()
+
+    pkg_to_url_branch = {}
+    with pathlib.Path(args.from_file).open() as req_txt:
+        for ln in req_txt:
+            ln = ln.strip()
+            if not ln:
+                continue
+            if ln.startswith("#"):
+                continue
+
+            match = vcs_url_re.search(ln)
+            if not match:
+                continue
+
+            branch = match.group(2)
+            if branch:
+                assert branch.startswith("@")
+                branch = branch[1:]
+
+            pkg_to_url_branch[match.group(3)] = (
+                    match.group(1),
+                    branch,
+                    )
+
+    with pathlib.Path(args.to_file).open() as req_txt:
+        result = []
+        for ln in req_txt:
+            lnread = ln.strip()
+            if not lnread:
+                result.append(ln)
+            if lnread.startswith("#"):
+                result.append(ln)
+
+            match = vcs_url_re.search(lnread)
+            if match and match.group(3) in pkg_to_url_branch:
+                projname = match.group(3)
+                base_url, branch = pkg_to_url_branch[projname]
+                pkgspec = f"{base_url}"
+                if branch:
+                    pkgspec += f"@{branch}"
+                pkgspec += f"#egg={projname}"
+
+                result.append(vcs_url_re.sub(pkgspec, ln))
+            else:
+                result.append(ln)
+
+    with pathlib.Path(args.to_file).open("w") as req_txt:
+        req_txt.write("".join(result))
+
+
+if __name__ == "__main__":
+    main()