Subject: [PATCH] doc: Use G-Expressions for package definition example.

From: Bruno Victal <[email-masked]>
Date: Mon, 10 Apr 2023 16:13:30 +0100

* doc/guix.texi (Build Phases): Use G-Expressions for example.
---
 doc/guix.texi | 29 +++++++++++++++++------------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/doc/guix.texi b/doc/guix.texi
index ed42488882..100ad93a3e 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -10131,21 +10131,26 @@ Build Phases
     ;; other fields omitted
     (build-system gnu-build-system)
     (arguments
-     '(#:phases (modify-phases %standard-phases
-                  (delete 'configure)
-                  (add-before 'build 'set-prefix-in-makefile
-                    (lambda* (#:key outputs #:allow-other-keys)
-                      ;; Modify the makefile so that its
-                      ;; 'PREFIX' variable points to "out".
-                      (let ((out (assoc-ref outputs "out")))
-                        (substitute* "Makefile"
-                          (("PREFIX =.*")
-                           (string-append "PREFIX = "
-                                          out "\n")))))))))))
+     (list
+      #:phases
+      #~(modify-phases %standard-phases
+          (delete 'configure)
+          (add-before 'build 'set-prefix-in-makefile
+            (lambda* (#:key inputs #:allow-other-keys)
+              ;; Modify the makefile so that its
+              ;; 'PREFIX' variable points to "out" and
+              ;; 'XMLLINT' points to the correct path.
+              (substitute* "Makefile"
+                (("PREFIX =.*")
+                 (string-append "PREFIX = " #$output "\n"))
+                (("XMLLINT =.*")
+                 (string-append "XMLLINT = "
+                                (search-input-file inputs "/bin/xmllint")
+                                "\n"))))))))))
 @end lisp
 
 The new phase that is inserted is written as an anonymous procedure,
-introduced with @code{lambda*}; it honors the @code{outputs} parameter
+introduced with @code{lambda*}; it honors the @code{inputs} parameter
 we have seen before.  @xref{Build Utilities}, for more about the helpers
 used by this phase, and for more examples of @code{modify-phases}.

base-commit: b78d6ceaa07be3c7582627cd28712b67102e521c
-- 
2.39.2