Hi Guix,
I have a somewhat unusual workflow that requires me to do a number of
processes on numerous, but small input files. The original is a bit
unwieldy and takes several minutes to compile, but I've managed to
produce a more understandable and better performing example. Note,
that after a certain number of inputs, I get the following error:
info: .16 Loading workflow file `meow.gwl'...
info: 2.80 Computing workflow `cat'...
run: 12.96 Executing: /bin/sh -c
/gnu/store/kmssbjcdcabg9fh4nxscwwpnlb4px30h-gwl-meow.scm …
error: 13.01 Wrong type argument in position 1: #f
For comparison:
time cat /tmp/meow/{0..7769}
[…]
real 0m0,144s
user 0m0,049s
sys 0m0,094s
It takes GWL 6 times longer to compute the workflow than to create the
inputs in Guile, and 600 times longer than to actually execute the
shell command. I think there is room for improvement :)
Cheers
use-modules
guix build utils
define %directory "/tmp/meow"
mkdir-p %directory
define %files
map
lambda : i
let
: f : file %directory / : number->string i
call-with-output-file f
lambda : port
display "meow\n" port
. f
iota 7769
process meow
name "meow"
inputs %files
outputs "meow.cat"
# {
cat {{inputs}} > {{outputs}}
}
workflow cat
processes meow
