Thank you for your quick reply.

宋文武 writes:

> Roel Janssen <roel@gnu.org> writes:
>
>> From 64cfdae64cfe9af4ff162935edd4e208a0f5afc1 Mon Sep 17 00:00:00 2001
>> From: Roel Janssen <roel@gnu.org>
>> Date: Fri, 19 Feb 2016 11:00:06 +0100
>> Subject: [PATCH] gnu: Add libotf.
>>
>> * gnu/packages/fontutils.scm (libotf): New variable.
>> ---
>>  gnu/packages/fontutils.scm | 21 +++++++++++++++++++++
>>  1 file changed, 21 insertions(+)
>>
>> diff --git a/gnu/packages/fontutils.scm b/gnu/packages/fontutils.scm
>> index 7b5b330..5cd7c56 100644
>> --- a/gnu/packages/fontutils.scm
>> +++ b/gnu/packages/fontutils.scm
>> @@ -259,6 +259,27 @@ resolution.")
>>      (license license:gpl2+)
>>      (home-page "http://potrace.sourceforge.net/")))
>>  
>> +(define-public libotf
>> +  (package
>> +    (name "libotf")
>> +    (version "0.9.13")
>> +    (source (origin
>> +              (method url-fetch)
>> +              (uri (string-append "http://download.savannah.gnu.org/releases/m17n/libotf-"
> this line is too long, shouldn’t more than 80 chars.
>> +                   version ".tar.gz"))
>> +              (sha256
>> +               (base32 "0239zvfan56w7vrppriwy77fzb10ag9llaz15nsraps2a2x6di3v"))))
>> +    (build-system gnu-build-system)
>> +    (native-inputs
>> +     `(("freetype" ,freetype)))
> No need to be ‘native-inputs’.  And does ‘freetype’ is in the ‘libotf.pc’
> file?  If so, this should be in ‘propagate-inputs’.
>
> <https://www.gnu.org/software/guix/manual/html_node/package-Reference.html>
> for the details.

Thanks for pointing this out.  I thought 'native-inputs' was for
dependencies at compile time..  I changed it to propagated-inputs.

>> +    (home-page "http://www.nongnu.org/m17n/")
>> +    (synopsis "A Library for handling OpenType Font")
>> +    (description "The library can read Open Type Layout Tables from OTF file. 
>> +Currently these tables are supported; head, name, cmap, GDEF, GSUB, and GPOS.
>> +It can convert a Unicode character sequence to a glyph code sequence by using
>> +the above tables.")
> The ‘synopsis’ shouldn’t start with “A” or “An”, expect for GNU
> packages. And I think “This library” is better than “The library”
> for ‘description’.

Fixed.

>> +    (license license:lgpl2.0+)))
>> +
>>  (define-public libspiro
>>    (package
>>      (name "libspiro")