`features/default.nix` had a let-block that read
`~/.config/home-manager/user-packages.json` at eval time via
`builtins.pathExists` + `builtins.readFile`, parsed it as JSON, and
filtered to valid pkgs — then never appended the result to
`home.packages` or anywhere else. The `userPackages` variable was
completely orphan.
Two problems with the dead code: (1) it was an undocumented hidden
mechanism (no docs mentioned `user-packages.json`), (2) it made flake
evaluation impurely depend on a user's home directory for no payoff —
flake outputs would silently differ between machines depending on the
presence of that file, even though nothing in the build used it.
Removed the let-block entirely. The nomarchyLib import stays.
Found during Pillar 8 audit of features/apps.
66c98949ab