From f3f427c2e930e2fb1a72ff8bb9b4a870edfbf007 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Sat, 19 Sep 2015 11:14:42 +0200 Subject: guix system: Add '--derivation'. * guix/scripts/system.scm (perform-action): Add #:derivations-only? parameter and honor it. (show-help, %options): Add '--derivation'. (guix-system): Pass #:derivations-only? to 'perform-action'. * tests/guix-system.sh: Test it. * doc/guix.texi (Invoking guix system): Document it. --- guix/scripts/system.scm | 30 +++++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-) (limited to 'guix/scripts') diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm index 5e2d226dfe..71b92dacc7 100644 --- a/guix/scripts/system.scm +++ b/guix/scripts/system.scm @@ -300,7 +300,7 @@ it atomically, and then run OS's activation script." (system-disk-image os #:disk-image-size image-size)))) (define* (perform-action action os - #:key grub? dry-run? + #:key grub? dry-run? derivations-only? use-substitutes? device target image-size full-boot? (mappings '())) @@ -308,7 +308,13 @@ it atomically, and then run OS's activation script." the target devices for GRUB; TARGET is the target root directory; IMAGE-SIZE is the size of the image to be built, for the 'vm-image' and 'disk-image' actions. FULL-BOOT? is used for the 'vm' action; it determines whether to -boot directly to the kernel or to the bootloader." +boot directly to the kernel or to the bootloader. + +When DERIVATIONS-ONLY? is true, print the derivation file name(s) without +building anything." + (define println + (cut format #t "~a~%" <>)) + (mlet* %store-monad ((sys (system-derivation-for-action os action #:image-size image-size @@ -322,14 +328,17 @@ boot directly to the kernel or to the bootloader." (drvs -> (if (and grub? (memq action '(init reconfigure))) (list sys grub grub.cfg) (list sys))) - (% (maybe-build drvs #:dry-run? dry-run? - #:use-substitutes? use-substitutes?))) + (% (if derivations-only? + (return (for-each (compose println derivation-file-name) + drvs)) + (maybe-build drvs #:dry-run? dry-run? + #:use-substitutes? use-substitutes?)))) - (if dry-run? + (if (or dry-run? derivations-only?) (return #f) (begin - (for-each (cut format #t "~a~%" <>) - (map derivation->output-path drvs)) + (for-each (compose println derivation->output-path) + drvs) ;; Make sure GRUB is accessible. (when grub? @@ -382,6 +391,8 @@ Build the operating system declared in FILE according to ACTION.\n")) init initialize a root file system to run GNU.\n")) (show-build-options-help) + (display (_ " + -d, --derivation return the derivation of the given system")) (display (_ " --on-error=STRATEGY apply STRATEGY when an error occurs while reading FILE")) @@ -425,6 +436,9 @@ Build the operating system declared in FILE according to ACTION.\n")) (option '(#\V "version") #f #f (lambda args (show-version-and-exit "guix system"))) + (option '(#\d "derivation") #f #f + (lambda (opt name arg result) + (alist-cons 'derivations-only? #t result))) (option '("on-error") #t #f (lambda (opt name arg result) (alist-cons 'on-error (string->symbol arg) @@ -549,6 +563,8 @@ Build the operating system declared in FILE according to ACTION.\n")) (set-guile-for-build (default-guile)) (perform-action action os #:dry-run? dry? + #:derivations-only? (assoc-ref opts + 'derivations-only?) #:use-substitutes? (assoc-ref opts 'substitutes?) #:image-size (assoc-ref opts 'image-size) #:full-boot? (assoc-ref opts 'full-boot?) -- cgit v1.2.3