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Diffstat (limited to 'etc/time-travel-manifest.scm')
| -rw-r--r-- | etc/time-travel-manifest.scm | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/etc/time-travel-manifest.scm b/etc/time-travel-manifest.scm index 3d7ecff370..f09659d20d 100644 --- a/etc/time-travel-manifest.scm +++ b/etc/time-travel-manifest.scm @@ -20,7 +20,11 @@ ;;; releases from the current Guix, as per 'guix time-machine'. (use-modules (srfi srfi-9) (ice-9 match) - (guix channels) (guix gexp)) + (guix channels) (guix gexp) + ((guix store) #:select (%store-monad)) + ((guix monads) #:select (mparameterize return)) + ((guix git) #:select (%repository-cache-directory)) + ((guix build utils) #:select (mkdir-p))) ;; Representation of the latest channels. This type exists just so we can ;; refer to such records in a gexp. @@ -33,7 +37,14 @@ system target) (match instance (($ <guix-instance> channels) - (latest-channel-derivation channels)))) + ;; When this manifest is evaluated by Cuirass, make sure it does not + ;; fiddle with the cached checkout that Cuirass is also using since + ;; concurrent accesses are unsafe. + (mparameterize %store-monad ((%repository-cache-directory + (string-append (%repository-cache-directory) + "/time-travel"))) + (return (mkdir-p (%repository-cache-directory))) + (latest-channel-derivation channels))))) (define (guix-instance->manifest-entry instance) "Return a manifest entry for INSTANCE." |