relative-path? error in Racket 8.1

[sorawee]

Every time I open a file, I get the following error:

relative-path?: contract violation
  expected: (or/c path? string? path-for-some-system?)
  given: '(up up #"extra-pkgs" #"htdp" #"htdp")

I found that the error originates from https://github.com/greghendershott/racket-mode/blob/master/racket/commands/module-names.rkt#L90. In particular, (list-ref v 1) has the value of '(up up #"extra-pkgs" #"htdp" #"htdp") for me.

The discussion at https://groups.google.com/g/racket-users/c/EizredVbDHY looks relevant.

((alist-get 'racket-mode package-alist))
((emacs-version "27.1")
 (system-type darwin)
 (x-gtk-use-system-tooltips UNDEFINED)
 (major-mode racket-mode)
 (racket--el-source-dir "/Users/sorawee/.emacs.d/.local/straight/build-27.1/racket-mode/")
 (racket--rkt-source-dir "/Users/sorawee/.emacs.d/.local/straight/build-27.1/racket-mode/racket/")
 (racket-program "racket")
 (racket-command-timeout 10)
 (racket-path-from-emacs-to-racket-function identity)
 (racket-path-from-racket-to-emacs-function identity)
 (racket-browse-url-function racket-browse-url-using-temporary-file)
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 (racket-xp-after-change-refresh-delay 1)
 (racket-xp-mode-lighter
  (:eval
   (racket--xp-mode-lighter)))
 (racket-xp-highlight-unused-regexp "^[^_]")
 (racket-repl-buffer-name-function nil)
 (racket-submodules-to-run
  ((test)
   (main)))
 (racket-memory-limit 2048)
 (racket-error-context medium)
 (racket-repl-history-directory "~/.emacs.d/.local/etc/racket-mode/")
 (racket-history-filter-regexp "\\`\\s *\\'")
 (racket-images-inline t)
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 (racket-pretty-print t)
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 (racket-pretty-print t)
 (racket-indent-curly-as-sequence t)
 (racket-indent-sequence-depth 3)
 (racket-pretty-lambda nil)
 (racket-smart-open-bracket-enable nil)
 (racket-module-forms "\\s(\\(?:module[*+]?\\|library\\)")
 (racket-logger-config
  ((cm-accomplice . warning)
   (GC . info)
   (module-prefetch . warning)
   (optimizer . info)
   (racket/contract . error)
   (sequence-specialization . info)
   (* . fatal)))
 (racket-show-functions
  (racket-show-pseudo-tooltip)))
(enabled-minor-modes
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 (magit-popup-help-mode)
 (magit-todos-mode)
 (magit-wip-after-apply-mode)
 (magit-wip-after-save-local-mode)
 (magit-wip-after-save-mode)
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 (semantic-stickyfunc-mode)
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 (shell-command-with-editor-mode)
 (smartparens-global-strict-mode)
 (smartparens-strict-mode)
 (smerge-mode)
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 (solaire-mode)
 (tab-bar-history-mode)
 (tab-bar-mode)
 (temp-buffer-resize-mode)
 (text-scale-mode)
 (tool-bar-mode)
 (tooltip-mode)
 (transient-resume-mode)
 (unify-8859-on-decoding-mode)
 (unify-8859-on-encoding-mode)
 (url-handler-mode)
 (use-hard-newlines)
 (vc-parent-buffer)
 (view-mode)
 (visible-mode)
 (which-function-mode)
 (whitespace-newline-mode)
 (with-editor-mode)
 (xref-etags-mode)
 (yas-global-mode))

[greghendershott]

Thanks for reporting!

I've been running a build from source, but hadn't refreshed/rebuilt in a couple weeks.

I'm rebuilding now, and will test when it finishes.

It looks like it might be as simple as making a change similar to this.