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| author | Jan Nieuwenhuizen <janneke@gnu.org> | 2018-10-21 23:18:19 +0200 |
|---|---|---|
| committer | Jan Nieuwenhuizen <janneke@gnu.org> | 2018-10-21 23:19:35 +0200 |
| commit | cf7658f7cb5de0e17f4801faa84c378a4b40033e (patch) | |
| tree | 646fa120d67bb41868a543461700e62aa170b2c0 /guix/gexp.scm | |
| parent | 09c5a5680a06011f985a84aa26fb890b3be453bd (diff) | |
| parent | ffddb42d6c510456997ee6de1c1b8026c9ce6d14 (diff) | |
Merge branch 'core-updates' into core-updates-next
Diffstat (limited to 'guix/gexp.scm')
| -rw-r--r-- | guix/gexp.scm | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/guix/gexp.scm b/guix/gexp.scm index 770b79e012..f7def5862b 100644 --- a/guix/gexp.scm +++ b/guix/gexp.scm @@ -438,6 +438,14 @@ This is the declarative counterpart of 'gexp->file'." (base file-append-base) ;<package> | <derivation> | ... (suffix file-append-suffix)) ;list of strings +(define (write-file-append file port) + (match file + (($ <file-append> base suffix) + (format port "#<file-append ~s ~s>" base + (string-join suffix))))) + +(set-record-type-printer! <file-append> write-file-append) + (define (file-append base . suffix) "Return a <file-append> object that expands to the concatenation of BASE and SUFFIX." |