* bug#44525: Derivation of computed-file has no outputs @ 2020-11-08 20:19 Stefan 2020-11-08 20:44 ` Marius Bakke 2020-11-08 23:45 ` bug#44525: Stefan 0 siblings, 2 replies; 4+ messages in thread From: Stefan @ 2020-11-08 20:19 UTC (permalink / raw) To: 44525 Hi! I try to use a computed-file as an input to a bootloader profile hook function. Using guix system I get this error message: guix system: error: reference to invalid output 'out' of derivation '/gnu/store/946szbrwn3ja74yjnibbhjisjflvsk73-test.txt.drv' This is the simple definition of the computed-file: (computed-file "test.txt" (with-imported-modules '((guix utils)) #~(%current-system))) And this is the content of the generated derivation of it: Derive([],[("/gnu/store/0hcx4wgpgf1nn4gl3lhnd055vj2y28cj-guile-3.0.2.drv",["out"]),("/gnu/store/2ss1lzy0x0wwayy5n5mvzmsv77dnni39-module-import-compiled.drv",["out"])],["/gnu/store/9lw2pp0hjcjgmq5hx7w6aq92699r6pim-module-import","/gnu/store/plgbvrkkq1ghvph24kf0bdgb4w8glgqb-test.txt-builder"],"aarch64-linux","/gnu/store/x3gq648qnfnla7nppyfjvj62s2i8y7rl-guile-3.0.2/bin/guile",["--no-auto-compile","-L","/gnu/store/9lw2pp0hjcjgmq5hx7w6aq92699r6pim-module-import","-C","/gnu/store/3v6bh2hn62i4qp674d1hqg4ca7hpys3a-module-import-compiled","/gnu/store/plgbvrkkq1ghvph24kf0bdgb4w8glgqb-test.txt-builder"],[("preferLocalBuild","1")]) I think the problem is visible already with this call: scheme@(guile-user)> (derivation-path->output-paths "/gnu/store/946szbrwn3ja74yjnibbhjisjflvsk73-test.txt.drv") $5 = () Bye Stefan ^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#44525: Derivation of computed-file has no outputs 2020-11-08 20:19 bug#44525: Derivation of computed-file has no outputs Stefan @ 2020-11-08 20:44 ` Marius Bakke 2020-11-08 23:38 ` Stefan 2020-11-08 23:45 ` bug#44525: Stefan 1 sibling, 1 reply; 4+ messages in thread From: Marius Bakke @ 2020-11-08 20:44 UTC (permalink / raw) To: Stefan, 44525 [-- Attachment #1: Type: text/plain, Size: 840 bytes --] Stefan <stefan-guix@vodafonemail.de> writes: > Hi! > > I try to use a computed-file as an input to a bootloader profile hook function. Using guix system I get this error message: > > guix system: error: reference to invalid output 'out' of derivation '/gnu/store/946szbrwn3ja74yjnibbhjisjflvsk73-test.txt.drv' > > This is the simple definition of the computed-file: > > (computed-file "test.txt" (with-imported-modules '((guix utils)) #~(%current-system))) That's expected: this derivation does not produce any outputs. Assuming you intended to write (%current-system) to test.txt, you can do something along these lines: (computed-file "test.txt" #~(call-with-output-file #$output (lambda (port) (format port #$(%current-system))))) So I think this is not-a-bug. WDYT? [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 507 bytes --] ^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#44525: Derivation of computed-file has no outputs 2020-11-08 20:44 ` Marius Bakke @ 2020-11-08 23:38 ` Stefan 0 siblings, 0 replies; 4+ messages in thread From: Stefan @ 2020-11-08 23:38 UTC (permalink / raw) To: Marius Bakke; +Cc: 44525 Hi Marius! > Assuming you intended to write (%current-system) to test.txt, you can do > something along these lines: > > (computed-file "test.txt" > #~(call-with-output-file #$output > (lambda (port) > (format port #$(%current-system))))) Thanks for this solution. > That's expected: this derivation does not produce any outputs. > So I think this is not-a-bug. WDYT? I think I got a bit distracted by the functionality of plain-file and the similar wording of the documentation of computed-file. Thanks, I’ll close this issue. Bye Stefan ^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#44525: 2020-11-08 20:19 bug#44525: Derivation of computed-file has no outputs Stefan 2020-11-08 20:44 ` Marius Bakke @ 2020-11-08 23:45 ` Stefan 1 sibling, 0 replies; 4+ messages in thread From: Stefan @ 2020-11-08 23:45 UTC (permalink / raw) To: 44525-done ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-11-08 23:47 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2020-11-08 20:19 bug#44525: Derivation of computed-file has no outputs Stefan 2020-11-08 20:44 ` Marius Bakke 2020-11-08 23:38 ` Stefan 2020-11-08 23:45 ` bug#44525: Stefan
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