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gnu: smlnj: Fix use of Ctrl-c in sml REPL. 

* gnu/packages/sml.scm (smlnj): Replace INVOKE with SYSTEM which has
more favourable signal dispositions.

Signed-off-by: Tobias Geerinckx-Rice <me@tobias.gr>
master
Foo Chuan Wei 2022-05-25 01:44:59 +00:00 committed by Tobias Geerinckx-Rice
parent ed15c92139
commit 62da327848
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1 changed files with 16 additions and 4 deletions
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20
gnu/packages/sml.scm
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@ -175,10 +175,22 @@ function interface, and a symbolic debugger.")
"sml.boot.amd64-unix/SMLNJ-BASIS/.cm/amd64-unix/basis-common.cm"))
;; Build.
(invoke "./config/install.sh" "-default"
(if (string=? "i686-linux" ,(%current-system))
"32"
"64"))
;; The `sml` executable built by this package somehow inherits the
;; signal dispositions of the shell where it was built. If SIGINT
;; is ignored in the shell, the resulting `sml` will also ignore
;; SIGINT. This will break the use of Ctrl-c for interrupting
;; execution in the SML/NJ REPL.
;; Here, we use Guile's `system` procedure instead of Guix's
;; `invoke` because `invoke` uses Guile's `system*`, which causes
;; SIGINT and SIGQUIT to be ignored.
(let ((exit-code
(system (string-append "./config/install.sh -default "
(if (string=? "i686-linux"
,(%current-system))
"32"
"64")))))
(unless (zero? exit-code)
(error (format #f "Exit code: ~a" exit-code))))
;; Undo the binary patch.
(for-each