[Chicken-janitors] #1324: setup-helper setup does not respect CHICKEN_INCLUDE_PATH

[Chicken Trac]

#1324: setup-helper setup does not respect CHICKEN_INCLUDE_PATH
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 Reporter:  retroj      |                 Owner:
     Type:  defect      |                Status:  new
 Priority:  major       |             Milestone:  someday
Component:  extensions  |               Version:  4.11.0
 Keywords:              |  Estimated difficulty:
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 In the setup-helper egg, its setup includes the following step:

     (copy-file "setup-helper.scm" (chicken-home))

 This fails with a warning if `chicken-home` is read-only, and advises that
 it will be necessary to use CHICKEN_INCLUDE_PATH to use setup-helper.
 Instead of only trying `(chicken-home)`, it should respect
 CHICKEN_INCLUDE_PATH itself if that variable is set, like eggs that use
 setup-helper do, via `copy-to-home`.

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Ticket URL: <https://bugs.call-cc.org/ticket/1324>
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CHICKEN Scheme is a compiler for the Scheme programming language.