Re: Finding the store path of a package

[zimoun]

Hi,

In addition, I am also lost with this sequence:

 1. dry-run openmpi list dependencies
 2. do the wrong thing with the REPL
 3. garbage collect
 4. redo the dry-run and now the dependencies are not listed
 
Sorry Konrad, ’package-output’ is definitively wrong.  Worse, the items
listed in the first dry-run and then downloaded are not in the store but
not listed by dry-run neither.

--8<---------------cut here---------------start------------->8---
$ guix build -n openmpi
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
16.0 MB would be downloaded:                                                    
                                                                                
                                
   /gnu/store/gm6d1vr75d4247bq834pks4ln8j3bm3l-psm2-11.2.86
   /gnu/store/4i9xg8dwns6ksjcb2kxkxmj9100jl4x5-ucx-1.6.1
   /gnu/store/977xygcarq06p8qsxkj686cxchf6m6pg-opensm-3.3.22
   /gnu/store/hbamhqhm4vq8fp27v9qgyc9rr6pf7fyw-libnl-3.5.0
   /gnu/store/1sw0s2a1ndqzvngmf1jsn19nwk96m9f9-rdma-core-33.1
   /gnu/store/wlhizxq9xcfz7vdf5h75xcalabad81q6-libfabric-1.11.2
   /gnu/store/y88fpc6jk6a4smxqjq0s835q5mximf02-linux-pam-1.5.1
   /gnu/store/agmdf3ib9sx7wqpznxxyki0pdbyhi4p5-freeipmi-1.6.7
   /gnu/store/b0x9j72z490kk0pld2ab4qa146gq4x00-numactl-2.0.14
   /gnu/store/jfwfsq932r209myi2ybrhy1yzh86m6a7-json-c-0.14
   /gnu/store/1s9gmhycv7xhzgym0w13rnbyv4irk2d7-hwloc-2.4.1-lib
   /gnu/store/vnyxs3vvzday63hk0qmlxfaq0wikc11h-munge-0.5.14
   /gnu/store/4lnskfwx6s7k8d3gr3mdq1p27z784m1r-slurm-20.11.3
   /gnu/store/yzs7m97m0d224qf1x8qxg1y3j5n29c3b-psm-3.3.20170428
   /gnu/store/wqcbimmq44rk882hmkj99zh43jmamps2-openmpi-4.0.5-debug
   /gnu/store/g07826knh72xwsdvpim5k30pqzjkcry9-openmpi-4.0.5
--8<---------------cut here---------------end--------------->8---

--8<---------------cut here---------------start------------->8---
$ guix repl                                                                     
                                                                          
GNU Guile 3.0.5                                                                 
                                                            
Copyright (C) 1995-2021 Free Software Foundation, Inc.
Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
This program is free software, and you are welcome to redistribute it
under certain conditions; type `,show c' for details.

Enter `,help' for help.                                                         
                                                                                
            
scheme@(guix-user)> ,use(gnu packages mpi)
scheme@(guix-user)> ,use(guix store)
scheme@(guix-user)> ,use(guix packages)
scheme@(guix-user)> (with-store store (package-output store openmpi))
fetching path `/gnu/store/1s9gmhycv7xhzgym0w13rnbyv4irk2d7-hwloc-2.4.1-lib'...
Downloading 
https://ci.guix.gnu.org/nar/lzip/1s9gmhycv7xhzgym0w13rnbyv4irk2d7-hwloc-2.4.1-lib...
hwloc-2.4.1-lib  204KiB              513KiB/s 00:00 [##################]100.0%
[..]
$1 = "/gnu/store/g07826knh72xwsdvpim5k30pqzjkcry9-openmpi-4.0.5"
scheme@(guix-user)> ,q
--8<---------------cut here---------------end--------------->8---

--8<---------------cut here---------------start------------->8---
$ guix gc
--8<---------------cut here---------------end--------------->8---

--8<---------------cut here---------------start------------->8---
$ guix build -n openmpi
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
12.5 MB would be downloaded:
   /gnu/store/fbn395nfpbp4d4fr6jsbmwcx6n10kg16-python-minimal-3.8.2
   /gnu/store/7hizrpdsqf6q3pjgzmi51r5vbzlijkw0-python-minimal-wrapper-3.8.2
--8<---------------cut here---------------end--------------->8---


--8<---------------cut here---------------start------------->8---
$ guix show openmpi | recsel -p dependencies | grep slurm
+ rdma-core@33.1 slurm@20.11.3 ucx@1.6.1 valgrind@3.16.1

$ guix gc -D /gnu/store/4lnskfwx6s7k8d3gr3mdq1p27z784m1r-slurm-20.11.3
finding garbage collector roots...
deleting `/gnu/store/trash'
deleting unused links...
note: currently hard linking saves 13699.88 MiB

$ guix gc --list-dead | grep slurm
finding garbage collector roots...
determining live/dead paths...

$ guix gc --list-live | grep slurm
finding garbage collector roots...
determining live/dead paths...

$ ls /gnu/store/4lnskfwx6s7k8d3gr3mdq1p27z784m1r-slurm-20.11.3
ls: cannot access '/gnu/store/4lnskfwx6s7k8d3gr3mdq1p27z784m1r-slurm-20.11.3': 
No such file or directory

$ guix build -n openmpi
12.5 MB would be downloaded:
   /gnu/store/fbn395nfpbp4d4fr6jsbmwcx6n10kg16-python-minimal-3.8.2
   /gnu/store/7hizrpdsqf6q3pjgzmi51r5vbzlijkw0-python-minimal-wrapper-3.8.2
--8<---------------cut here---------------end--------------->8---


Cheers,
simon