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| -rw-r--r-- | doc/guix-cookbook.texi | 43 |
1 files changed, 21 insertions, 22 deletions
diff --git a/doc/guix-cookbook.texi b/doc/guix-cookbook.texi index d3c91326e9..ed0cd19cd5 100644 --- a/doc/guix-cookbook.texi +++ b/doc/guix-cookbook.texi @@ -814,15 +814,12 @@ another, more sophisticated package (slightly modified from the source): (add-after 'unpack 'make-files-writable-for-tests (lambda _ (for-each make-file-writable (find-files "." ".*"))))))) (inputs - `(("libssh2" ,libssh2) - ("http-parser" ,http-parser) - ("python" ,python-wrapper))) + (list libssh2 http-parser python-wrapper)) (native-inputs - `(("pkg-config" ,pkg-config))) + (list pkg-config)) (propagated-inputs ;; These two libraries are in 'Requires.private' in libgit2.pc. - `(("openssl" ,openssl) - ("zlib" ,zlib))) + (list openssl zlib)) (home-page "https://libgit2.github.com/") (synopsis "Library providing Git core methods") (description @@ -886,22 +883,6 @@ Snippets might need additional Guile modules which can be imported from the @subsubsection Inputs -First, a syntactic comment: See the quasi-quote / comma syntax? - -@lisp - (native-inputs - `(("pkg-config" ,pkg-config))) -@end lisp - -is equivalent to - -@lisp - (native-inputs - (list (list "pkg-config" pkg-config))) -@end lisp - -You'll mostly see the former because it's shorter. - There are 3 different input types. In short: @table @asis @@ -935,6 +916,24 @@ It also matters when a substitute is available, in which case only the @emph{inp and @emph{propagated inputs} will be fetched: the @emph{native inputs} are not required to install a package from a substitute. +@quotation Note +You may see here and there snippets where package inputs are written +quite differently, like so: + +@lisp +;; The "old style" for inputs. +(inputs + `(("libssh2" ,libssh2) + ("http-parser" ,http-parser) + ("python" ,python-wrapper))) +@end lisp + +This is the ``old style'', where each input in the list is explicitly +given a label (a string). It is still supported but we recommend using +the style above instead. @xref{package Reference,,, guix, GNU Guix +Reference Manual}, for more info. +@end quotation + @subsubsection Outputs Just like how a package can have multiple inputs, it can also produce multiple |