01/03: build-system: cargo: Make Cargo.toml writeable.

[David Craven]

dvc pushed a commit to branch master
in repository guix.

commit dc77498c1c6e3aaef9aae1cac189e6d9db470952
Author: David Craven <address@hidden>
Date:   Sun Jan 1 16:11:55 2017 +0100

    build-system: cargo: Make Cargo.toml writeable.
    
    * guix/build/cargo-build-system.scm (configure): Make sure Cargo.toml
      is writeable before attempting modification.
    
    Problem reported by Danny Milosavljevic <address@hidden>.
---
 guix/build/cargo-build-system.scm |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/guix/build/cargo-build-system.scm 
b/guix/build/cargo-build-system.scm
index 460d829..4fa29b4 100644
--- a/guix/build/cargo-build-system.scm
+++ b/guix/build/cargo-build-system.scm
@@ -43,6 +43,8 @@
 
 (define* (configure #:key inputs #:allow-other-keys)
   "Replace Cargo.toml [dependencies] section with guix inputs."
+  ;; Make sure Cargo.toml is writeable when the crate uses git-fetch.
+  (chmod "Cargo.toml" #o644)
   (let ((port (open-file "Cargo.toml" "a" #:encoding "utf-8")))
     (format port "~%[replace]~%")
     (for-each