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bug#50493: [PATCH 2/4] build-system/go: Initialize build cache from inpu
From: |
Sarah Morgensen |
Subject: |
bug#50493: [PATCH 2/4] build-system/go: Initialize build cache from input packages. |
Date: |
Sun, 19 Sep 2021 22:20:49 -0700 |
* guix/build/go-build-system.com (setup-go-environment): Set GOCACHE to
a location within the build directory. Union "/var/cache/go/build"
input directories to initialize the cache. Generate "trim.txt" within
the cache, with the current time.
---
guix/build/go-build-system.scm | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/guix/build/go-build-system.scm b/guix/build/go-build-system.scm
index 645d2fe680..9f249b0777 100644
--- a/guix/build/go-build-system.scm
+++ b/guix/build/go-build-system.scm
@@ -5,6 +5,7 @@
;;; Copyright © 2020 Jack Hill <jackhill@jackhill.us>
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;; Copyright © 2020, 2021 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -138,9 +139,28 @@ (define* (setup-go-environment #:key inputs outputs goos
goarch #:allow-other-ke
where executables (\"commands\") are installed to. This phase is sometimes
used
by packages that use (guix build-system gnu) but have a handful of Go
dependencies, so it should be self-contained."
- ;; The Go cache is required starting in Go 1.12. We don't actually use it
but
- ;; we need it to be a writable directory.
- (setenv "GOCACHE" "/tmp/go-cache")
+ (define (search-input-directories dir)
+ (filter directory-exists?
+ (map (match-lambda
+ ((name . directory)
+ (string-append directory "/" dir)))
+ inputs)))
+
+ ;; Seed the Go build cache with the build caches from input packages.
+ (let ((cache (string-append (getcwd) "/go-build")))
+ (setenv "GOCACHE" cache)
+ (union-build cache
+ (search-input-directories "/var/cache/go/build")
+ ;; Creating all directories isn't that bad, because there are
+ ;; only ever 256 of them.
+ #:create-all-directories? #t
+ #:log-port (%make-void-port "w"))
+
+ ;; Tell Go that the cache was recently trimmed, so it doesn't try to.
+ (call-with-output-file (string-append cache "/trim.txt")
+ (lambda (port)
+ (format port "~a" (current-time)))))
+
;; Using the current working directory as GOPATH makes it easier for
packagers
;; who need to manipulate the unpacked source code.
(setenv "GOPATH" (getcwd))
--
2.33.0