Package Definitions and Maintenance

[Thomas Sigurdsen <thomas.sigurdsen@gmail.com>]

Hi Guix!

I'm sending two threads with the same intro, read below the line for the
questions.

I've been playing around with guixsd on my day-to-day work laptop for a month
or so now and have to say I'm thoroughly happy about how everything is put
together and mostly _just works_.

I'll note that I'm still very much learning guile and scheme. But the manual
(https://www.gnu.org/software/guile/manual/) is amazing.

-------------------------------------------------------------------------------------------------

I have tried writing some package definitions
(https://notabug.org/thomassgn/guixsd-configuration/src/master/modules/tms/).
But I can not get it to even pass evaluation and I don't understand what is
meant by 'procedure #f'. Assuming I somewhere have a value that should eval
to a procedure but evals to false instead - I just don't understand where.

The first warning about freetype I don't understand how to get around
also. I've attached my output from running 'guix package -i wkhtmltopdf' at
the end.

I'm also curious: I'm happy to contribute the package definitions I write to
guix; but I don't think I'm a reliable maintainer. That is, I don't know if I
will have the capacity to update the definitions as upstream changes with time
(I'm not reliable like that). Should I still send patches with package
definitions?

My entire configuration with homemade modules can be found at:
https://notabug.org/thomassgn/guixsd-configuration


WARNING: (wkhtmltopdf): `freetype' imported from both (guix licenses) and
(gnu packages fontutils) Backtrace:
In ice-9/boot-9.scm:
4056: 19 [#<procedure 1148900 at ice-9/boot-9.scm:4051:3 ()>]
1727: 18 [%start-stack load-stack ...]
1732: 17 [#<procedure 115cb10 ()>]
In unknown file:
   ?: 16 [primitive-load
"/gnu/store/0icg6mr0cw74srvp39hms8fvh3s821yf-guix-0.12.0-7.aabe/bin/.guix-real"]
In guix/ui.scm: 1228: 15 [run-guix-command package "-i" "wkhtmltopdf"]
In ice-9/boot-9.scm:
 160: 14 [catch srfi-34 #<procedure 1b71c00 at guix/ui.scm:432:2 ()> ...]
 160: 13 [catch system-error ...]
In guix/scripts/package.scm:
 896: 12 [#<procedure 1b71c20 at guix/scripts/package.scm:884:4 ()>]
 863: 11 [process-actions #<build-daemon 256.97 1b722c0> (# # # # ...)]
In guix/ui.scm:
 729: 10 [show-manifest-transaction # # # ...]
In srfi/srfi-1.scm:
 598: 9 [map #<procedure 4bd45c0 at guix/ui.scm:653:9 (name version output
item)> ...] In guix/ui.scm:
 658: 8 [#<procedure 4bd45c0 at guix/ui.scm:653:9 (name version output item)>
"wkhtmltopdf" ...] In guix/packages.scm:
1134: 7 [package-output # # "out" ...]
 786: 6 [cache! #<weak-key-hash-table 1a3da00 339/443> # # ...]
1092: 5 [thunk]
1024: 4 [bag->derivation # # #]
In srfi/srfi-1.scm:
 573: 3 [map #<procedure 356a150 at guix/packages.scm:1026:30 (t-1331428)> #]
In guix/packages.scm:
 846: 2 [expand-input # # # ...]
In guix/store.scm:
1176: 1 [#<procedure 1a404a0 at guix/store.scm:1175:26 (store . args)> #
# ...] In unknown file:
   ?: 0 [#f # "x86_64-linux" #f]

ERROR: In procedure #f:
ERROR: Wrong type to apply: #f