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build-system/haskell: Accept line breaks in config files.

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Long id’s will break to the next line.

* guix/build/haskell-build-system.scm (grep): Remove.
(register): Modify regular expression to account for newlines between
key and value, fail if package id is empty.
This commit is contained in:
Lars-Dominik Braun 2021-09-17 10:17:33 +02:00
parent 7cdb65dc9c
commit a01daed62c
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GPG key ID: F663943E08D8092A
1 changed files with 10 additions and 14 deletions
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24
guix/build/haskell-build-system.scm
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@ -143,17 +143,6 @@ and parameters ~s~%"
(find-files lib "\\.a$"))))
#t)
(define (grep rx port)
"Given a regular-expression RX including a group, read from PORT until the
first match and return the content of the group."
(let ((line (read-line port)))
(if (eof-object? line)
#f
(let ((rx-result (regexp-exec rx line)))
(if rx-result
(match:substring rx-result 1)
(grep rx port))))))
(define* (setup-compiler #:key system inputs outputs #:allow-other-keys)
"Setup the compiler environment."
(let* ((haskell (assoc-ref inputs "haskell"))
@ -242,7 +231,7 @@ given Haskell package."
(config-dir (string-append lib
"/ghc-" version
"/" name ".conf.d"))
(id-rx (make-regexp "^id: *(.*)$"))
(id-rx (make-regexp "^id:[ \n\t]+([^ \t\n]+)$" regexp/newline))
(config-file (string-append out "/" name ".conf"))
(params
(list (string-append "--gen-pkg-config=" config-file))))
@ -250,8 +239,15 @@ given Haskell package."
;; The conf file is created only when there is a library to register.
(when (file-exists? config-file)
(mkdir-p config-dir)
(let ((config-file-name+id
(call-with-ascii-input-file config-file (cut grep id-rx <>))))
(let* ((contents (call-with-input-file config-file read-string))
(config-file-name+id (match:substring (first (list-matches id-rx contents)) 1)))
(when (or
(and
(string? config-file-name+id)
(string-null? config-file-name+id))
(not config-file-name+id))
(error (format #f "The package id for ~a is empty. This is a bug." config-file)))
;; Remove reference to "doc" output from "lib" (or "out") by rewriting the
;; "haddock-interfaces" field and removing the optional "haddock-html"