gnu: go-github-com-prometheus-common-sigv4: Update to 0.1.0, fix build.

Fix the build as seen in <https://ci.guix.gnu.org/build/5804380/log/raw>.

* gnu/packages/prometheus.scm (go-github-com-prometheus-common-sigv4): Update to 0.1.0.
[source]: Remove all submodules and keep the sources just for
<github.com/prometheus/common/sigv4>.
[origin]: Apply new style for "go-version->git-ref" using <#:subdir> key
parameter.
[arguments]: <#:phases>: Remove 'override-prometheus-common; add
'fix-embed-files.

Change-Id: I69a37690baafbfca1a2e33ebdea957456a96b0e8

1 files changed, 43 insertions, 5 deletions

diff --git a/gnu/packages/prometheus.scm b/gnu/packages/prometheus.scm
index 9786cf7007..533a922d0b 100644
--- a/gnu/packages/prometheus.scm
+++ b/gnu/packages/prometheus.scm
@@ -351,16 +351,39 @@ metrics.")
 (define-public go-github-com-prometheus-common-sigv4
   (package
     (name "go-github-com-prometheus-common-sigv4")
-    (version "0.55.0")
+    (version "0.1.0")
     (source
      (origin
        (method git-fetch)
        (uri (git-reference
              (url "https://github.com/prometheus/common")
-             (commit (string-append "v" version))))
+             (commit (go-version->git-ref version
+                                          #:subdir "sigv4"))))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0bsbxil7qz8rhckhv0844nmn38g7i7347cjv5m6na47hbdpi0rqh"))))
+        (base32 "08sdhxryl1jpy829qki8k2jy773xhrbr9wsk997pxhbbvl634gvb"))
+       (modules '((guix build utils)
+                  (ice-9 ftw)
+                  (srfi srfi-26)))
+       (snippet
+        #~(begin
+            ;; XXX: 'delete-all-but' is copied from the turbovnc package.
+            ;; Consider to implement it as re-usable procedure in
+            ;; guix/build/utils or guix/build-system/go.
+            (define (delete-all-but directory . preserve)
+              (define (directory? x)
+                (and=> (stat x #f)
+                       (compose (cut eq? 'directory <>) stat:type)))
+              (with-directory-excursion directory
+                (let* ((pred
+                        (negate (cut member <> (append '("." "..") preserve))))
+                       (items (scandir "." pred)))
+                  (for-each (lambda (item)
+                              (if (directory? item)
+                                  (delete-file-recursively item)
+                                  (delete-file item)))
+                            items))))
+            (delete-all-but "." "sigv4")))))
     (build-system go-build-system)
     (arguments
      (list
@@ -368,9 +391,24 @@ metrics.")
       #:unpack-path "github.com/prometheus/common"
       #:phases
       #~(modify-phases %standard-phases
-          (add-before 'unpack 'override-prometheus-common
+          ;; TODO: Implement it in go-build-system.
+          ;;
+          ;; This happens due to Golang can't determine the valid directory of
+          ;; the module of embed file which is symlinked during setup
+          ;; environment phase, but easy resolved after coping file from the
+          ;; store to the build directory of the current package, see details
+          ;; in Golang source:
+          ;;
+          ;; - URL: <https://github.com/golang/go/blob/>
+          ;; - commit: 82c14346d89ec0eeca114f9ca0e88516b2cda454
+          ;; - file: src/cmd/go/internal/load/pkg.go#L2059
+          (add-after 'unpack 'fix-embed-files
             (lambda _
-              (delete-file-recursively "src/github.com/prometheus/common"))))))
+              (for-each (lambda (file)
+                          (let ((file-store-path (readlink file)))
+                            (delete-file file)
+                            (copy-recursively file-store-path file)))
+                        (find-files "src" ".*(editions_defaults.binpb)$")))))))
     (native-inputs
      (list go-github-com-stretchr-testify))
     (propagated-inputs