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services: nix: Add more configuration fields.

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* gnu/services/nix.scm (<nix-configuration>)[build-directory]: New field.
(nix-service-etc, nix-shepherd-service): Take them into account.
* doc/guix.texi (Nix): Update it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Petr Hodina 2022-10-31 16:12:38 +01:00 committed by Ludovic Courtès
parent bbcd06e56c
commit 22acc0b029
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GPG key ID: 090B11993D9AEBB5
2 changed files with 17 additions and 3 deletions
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9
doc/guix.texi
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@ -37209,6 +37209,15 @@ The Nix package to use.
@item @code{sandbox} (default: @code{#t})
Specifies whether builds are sandboxed by default.
@item @code{build-directory} (default: @code{"/tmp"})
The directory where build directory are stored during builds.
This is useful to change if, for example, the default location does not
have enough space to hold build trees for big packages.
This is similar to setting the @env{TMPDIR} environment variable for
@command{guix-daemon}. @ref{Build Environment Setup, @env{TMPDIR}},
for more info.
@item @code{build-sandbox-items} (default: @code{'()})
This is a list of strings or objects appended to the
@code{build-sandbox-items} field of the configuration file.

11
gnu/services/nix.scm
View file

@ -54,6 +54,8 @@ (define-record-type* <nix-configuration>
(default nix))
(sandbox nix-configuration-sandbox ;boolean
(default #t))
(build-directory nix-configuration-build-directory ;string
(default "/tmp"))
(build-sandbox-items nix-configuration-build-sandbox-items ;list of strings
(default '()))
(extra-config nix-configuration-extra-config ;list of strings
@ -106,7 +108,7 @@ (define (nix-activation _)
(define nix-service-etc
(match-lambda
(($ <nix-configuration> package sandbox build-sandbox-items extra-config)
(($ <nix-configuration> package sandbox build-directory build-sandbox-items extra-config)
(let ((ref-file (references-file package)))
`(("nix/nix.conf"
,(computed-file
@ -130,7 +132,7 @@ (define internal-sandbox-paths
(define nix-shepherd-service
;; Return a <shepherd-service> for Nix.
(match-lambda
(($ <nix-configuration> package _ _ _ extra-options)
(($ <nix-configuration> package _ build-directory _ _ extra-options)
(list
(shepherd-service
(provision '(nix-daemon))
@ -138,7 +140,10 @@ (define nix-shepherd-service
(requirement '())
(start #~(make-forkexec-constructor
(list (string-append #$package "/bin/nix-daemon")
#$@extra-options)))
#$@extra-options)
#:environment-variables
(list (string-append "TMPDIR=" build-directory)
"PATH=/run/current-system/profile/bin")))
(respawn? #f)
(stop #~(make-kill-destructor)))))))