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bug#27162: [PATCH 5/6] ui: 'show-what-to-build' warns when we don't have
From: |
Ludovic Courtès |
Subject: |
bug#27162: [PATCH 5/6] ui: 'show-what-to-build' warns when we don't have enough disk space. |
Date: |
Wed, 31 May 2017 15:51:58 +0200 |
* 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 04c7463fb..0e47a200c 100644
--- a/guix/ui.scm
+++ b/guix/ui.scm
@@ -38,7 +38,8 @@
#: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 @@ error."
(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 @@ report what is prerequisites are available for download."
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 @@ report what is prerequisites are available for download."
(length download))
(null? download)
(map substitutable-path download)))))
+
+ (check-available-space installed-size)
+
(pair? build)))
(define show-what-to-build*
--
2.13.0