Hi Ricardo,

Patch file is attached with changes.

I modified guix/scripts/build.scm
       /(parameterize ((current-build-output-port (if quiet?//
//                                                     (%make-void-port
"w")//
//                                                     
(current-error-port))))//
/
to by REPLACING this to use colored output

      /(parameterize ((current-build-output-port 
colorful-build-output-port))/


UI.scm had the necessary changes.


I am getting the following error when building a package

/In ice-9/boot-9.scm://
//    837:9  6 (catch _ _ #<procedure 7f6bc6a0c468 at guix/ui.scm:589?> ?)//
//    837:9  5 (catch _ _ #<procedure 7f6bc6a0c480 at guix/ui.scm:697?> ?)//
//In guix/scripts/build.scm://
//   781:24  4 (_)//
//In guix/store.scm://
//   936:15  3 (_ #<build-daemon 256.97 919e60> _ _)//
//   620:13  2 (process-stderr _ _)//
//In unknown file://
//           1 (display "@ build-started /gnu/store/gxv20gis2i4xk8nmn?" ?)//
//           0 (display "@ build-started /gnu/store/gxv20gis2i4xk8nmn?" ?)//
//
//ERROR: In procedure display://
//ERROR: In procedure display: Wrong type argument in position 2:
#«parameter> 870600 proc: #<procedure 779340 at ice-9/boot-9.scm:1419:15
() | (x)»/