From dcfc6f213b287778b5dc6ea4a8d34f5e1368752b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Wed, 31 May 2017 15:26:21 +0200
Subject: [PATCH] ui: 'show-what-to-build' warns when we don't have enough disk
space.
* guix/ui.scm (check-available-space): New procedure.
(show-what-to-build): Compute 'installed-size' and call
'check-available-space'.
---
guix/ui.scm | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/guix/ui.scm b/guix/ui.scm
index 04700a6d204..5060fd6dc7f 100644
--- a/guix/ui.scm
+++ b/guix/ui.scm
@@ -38,7 +38,8 @@ (define-module (guix ui)
#:use-module (guix serialization)
#:use-module ((guix build utils) #:select (mkdir-p))
#:use-module ((guix licenses) #:select (license? license-name))
- #:use-module ((guix build syscalls) #:select (terminal-columns))
+ #:use-module ((guix build syscalls)
+ #:select (free-disk-space terminal-columns))
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-19)
@@ -581,6 +582,17 @@ (define (show-derivation-outputs derivation)
(derivation->output-path derivation out-name)))
(derivation-outputs derivation))))
+(define (check-available-space need)
+ "Make sure at least NEED bytes are available in the store. Otherwise emit a
+warning."
+ (let ((free (catch 'system-error
+ (lambda ()
+ (free-disk-space (%store-prefix)))
+ (const #f))))
+ (when (and free (>= need free))
+ (warning (G_ "at least ~,1h MB needed but only ~,1h MB available in ~a~%")
+ (/ need 1e6) (/ free 1e6) (%store-prefix)))))
+
(define* (show-what-to-build store drv
#:key dry-run? (use-substitutes? #t)
(mode (build-mode normal)))
@@ -631,7 +643,9 @@ (define (built-or-substitutable? drv)
substitutable-references
download))))
download)))
- ;; TODO: Show the installed size of DOWNLOAD.
+ (define installed-size
+ (reduce + 0 (map substitutable-nar-size download)))
+
(define download-size
(/ (reduce + 0 (map substitutable-download-size download))
1e6))
@@ -682,6 +696,9 @@ (define display-download-size?
(length download))
(null? download)
(map substitutable-path download)))))
+
+ (check-available-space installed-size)
+
(pair? build)))
(define show-what-to-build*
--
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