Sometimes quicklisp or ultralisp packages are broken. and (ql:quickload :broken) will not work. If you need to edit the package before quickload,
You can run: (ql::ensure-installed (ql::find-system :broken)),
then find it with (ql:where-is-system :broken),
and then edit it and run (ql:quickload :broken)
https://github.com/sirherrbatka/cl-data-structures
Is it used anywhere? The documentation makes no sense to me. Are there any new libraries that try to do the same?
;; (quicksort '(7 3 6 4 5 2 1))
(defun quicksort (d)
(let ((x (first d))
(xs (rest d)))
(macrolet ((filter-that (pre seq) `(remove-if (lambda (val) ,pre) ,seq)))
(labels ((less () (filter-that (not (< val x)) xs))
(equal- () (filter-that (not (= val x)) xs))
(more () (filter-that (not (> val x)) xs)))
(if (equal d '())
'()
(concatenate 'list
(quicksort (less))
(cons x (equal-))
(quicksort (more))))))))
can compile the project with cabal build,
but when I load the file in Emacs and use the menu option Haskell/Load tidy core I get an error like this and 5 more that make no sense. What is the meaning of:
Use -v (or `:set -v` in ghci) to see a list of the files searched for.
?
How can I fix the error? It seems that a fix for the problem will provide more help with modules.
/home/jacek/Programming/Haskell/cabal-experiments/graphviz-simple/app/Main.hs:7:1: error:
Could not find module ‘Data.GraphViz.Attributes’
Use -v (or `:set -v` in ghci) to see a list of the files searched for.
|
7 | import Data.GraphViz.Attributes (color, filled, shape, style, textLabel)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^