I believe this is the bug that was fixed in 3.3.1.3.
FYI, there's no such tag pushed into the official repo. https://gitlab.common-lisp.net/asdf/asdf/tags using HEAD, the test case i sent doesn't fail anymore, but our own issue still prevails. it's a large environment with many systems, but the symptom looks the same, although for us due to cxml. i couldn't easily test with an older version of ASDF because my SBCL already ships with 3.3.0.1 (preventing an easy downgrade), but it used to work until recently. after i edit cxml.asd to follow the foo/bar convention, i see a few of these, that may or may not be the cause of the spurious reload that i still see: WARNING: Computing just-done stamp in plan NIL for action (ASDF/LISP-ACTION:COMPILE-OP "iolib/syscalls" "ffi-types"), but dependency (ASDF/LISP-ACTION:PREPARE-OP "iolib/syscalls" "ffi-types") wasn't done yet! WARNING: Computing just-done stamp in plan NIL for action (ASDF/LISP-ACTION:COMPILE-OP "iolib/os" "ffi-types"), but dependency (ASDF/LISP-ACTION:PREPARE-OP "iolib/os" "ffi-types") wasn't done yet! WARNING: Computing just-done stamp in plan NIL for action (ASDF/LISP-ACTION:COMPILE-OP "iolib/sockets" "grovel"), but dependency (ASDF/LISP-ACTION:PREPARE-OP "iolib/sockets" "grovel") wasn't done yet! please note that this is not a burning issue for us, it's just a friendly heads up with the hopes that it's useful. -- • attila lendvai • PGP: 963F 5D5F 45C7 DFCD 0A39 -- “A true friendship involves two people who are both intensely focused on their own healing processes, on working on their own issues and maturing and evolving. Basically two people who are growing toward truth, and they both individually, in their own specific individual lives, have that as their purpose. And when they come together it becomes synergistic.” — Daniel Mackler