* bug#32789: Bash finds old version of guix after guix pull
@ 2018-09-20 21:49 Alex Branham
2018-09-21 8:05 ` Tobias Geerinckx-Rice
2018-09-21 14:58 ` Ricardo Wurmus
0 siblings, 2 replies; 6+ messages in thread
From: Alex Branham @ 2018-09-20 21:49 UTC (permalink / raw)
To: 32789
Hello,
After installing guixsd (0.15) on a VM and doing "guix pull", "guix --version"
gives 0.14-<stuff>.
I asked about this on IRC a few weeks ago and got a helpful answer. All
I needed to do to fix is was to run a simple bash command.
Unfortunately, I've forgotten what that was :-(
Reporting here since I didn't find anything in the issue tracker when I
looked.
Thanks,
Alex
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#32789: Bash finds old version of guix after guix pull
2018-09-20 21:49 bug#32789: Bash finds old version of guix after guix pull Alex Branham
@ 2018-09-21 8:05 ` Tobias Geerinckx-Rice
2018-09-21 14:58 ` Ricardo Wurmus
1 sibling, 0 replies; 6+ messages in thread
From: Tobias Geerinckx-Rice @ 2018-09-21 8:05 UTC (permalink / raw)
To: Alex Branham; +Cc: 32789
Alex,
Alex Branham wrote:
> After installing guixsd (0.15) on a VM and doing "guix pull",
> "guix --version"
> gives 0.14-<stuff>.
>
> I asked about this on IRC a few weeks ago and got a helpful
> answer. All
> I needed to do to fix is was to run a simple bash command.
> Unfortunately, I've forgotten what that was :-(
Was it
$ set +h
?
Kind regards,
T G-R
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#32789: Bash finds old version of guix after guix pull
2018-09-20 21:49 bug#32789: Bash finds old version of guix after guix pull Alex Branham
2018-09-21 8:05 ` Tobias Geerinckx-Rice
@ 2018-09-21 14:58 ` Ricardo Wurmus
2018-09-21 15:01 ` Alex Branham
1 sibling, 1 reply; 6+ messages in thread
From: Ricardo Wurmus @ 2018-09-21 14:58 UTC (permalink / raw)
To: Alex Branham; +Cc: 32789
Hi Alex,
> After installing guixsd (0.15) on a VM and doing "guix pull", "guix --version"
> gives 0.14-<stuff>.
>
> I asked about this on IRC a few weeks ago and got a helpful answer. All
> I needed to do to fix is was to run a simple bash command.
> Unfortunately, I've forgotten what that was :-(
I think you mean “hash -r” to make bash forget previously remembered
locations.
--
Ricardo
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#32789: Bash finds old version of guix after guix pull
2018-09-21 14:58 ` Ricardo Wurmus
@ 2018-09-21 15:01 ` Alex Branham
2018-09-21 16:06 ` Ricardo Wurmus
0 siblings, 1 reply; 6+ messages in thread
From: Alex Branham @ 2018-09-21 15:01 UTC (permalink / raw)
To: Ricardo Wurmus; +Cc: 32789
On Fri 21 Sep 2018 at 09:58, Ricardo Wurmus <rekado@elephly.net> wrote:
> Hi Alex,
>
>> After installing guixsd (0.15) on a VM and doing "guix pull", "guix --version"
>> gives 0.14-<stuff>.
>>
>> I asked about this on IRC a few weeks ago and got a helpful answer. All
>> I needed to do to fix is was to run a simple bash command.
>> Unfortunately, I've forgotten what that was :-(
>
> I think you mean “hash -r” to make bash forget previously remembered
> locations.
Indeed, that was it. Thanks for helping out here and on IRC!
I'll mention here for posterity that restarting the system also "fixes"
the issue.
I still don't understand why bash found guix 0.14 after guix pulling
from guix 0.15 though.
Thanks again,
Alex
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#32789: Bash finds old version of guix after guix pull
2018-09-21 15:01 ` Alex Branham
@ 2018-09-21 16:06 ` Ricardo Wurmus
2018-09-21 17:47 ` Alex Branham
0 siblings, 1 reply; 6+ messages in thread
From: Ricardo Wurmus @ 2018-09-21 16:06 UTC (permalink / raw)
To: Alex Branham; +Cc: 32789-done
Hi Alex,
> I'll mention here for posterity that restarting the system also "fixes"
> the issue.
Yes, bash will not remember paths across reboots.
> I still don't understand why bash found guix 0.14 after guix pulling
> from guix 0.15 though.
Bash optimizes lookups on the PATH; having found an executable on PATH
once, it can remember that location for a minor speed boost. The only
problem with this is that the cache can go stale.
From what I understand remembering locations is usually done manually by
running “hash”. I don’t know what would trigger this behaviour in your
case.
--
Ricardo
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#32789: Bash finds old version of guix after guix pull
2018-09-21 16:06 ` Ricardo Wurmus
@ 2018-09-21 17:47 ` Alex Branham
0 siblings, 0 replies; 6+ messages in thread
From: Alex Branham @ 2018-09-21 17:47 UTC (permalink / raw)
To: Ricardo Wurmus; +Cc: 32789-done
On Fri 21 Sep 2018 at 11:06, Ricardo Wurmus <rekado@elephly.net> wrote:
> Bash optimizes lookups on the PATH; having found an executable on PATH
> once, it can remember that location for a minor speed boost. The only
> problem with this is that the cache can go stale.
>
> From what I understand remembering locations is usually done manually by
> running “hash”. I don’t know what would trigger this behaviour in your
> case.
Right, all that makes sense. I'm wondering why/how bash ever found
guix-0.14 since I started out with guix-0.15.
Alex
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-09-21 17:54 UTC | newest]
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2018-09-20 21:49 bug#32789: Bash finds old version of guix after guix pull Alex Branham
2018-09-21 8:05 ` Tobias Geerinckx-Rice
2018-09-21 14:58 ` Ricardo Wurmus
2018-09-21 15:01 ` Alex Branham
2018-09-21 16:06 ` Ricardo Wurmus
2018-09-21 17:47 ` Alex Branham
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