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<aleph->
And that's fun. My postgres instance had a db get overwritten. :|
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<lejonet>
aleph-: finicky how?
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<colemickens>
I really can't believe people start new projects in a language where they have no problem carting around split_string functions to every new project
<JJJollyjim>
doesn't nix not have a split string function? :P
<colemickens>
if someone tried to write general purpose apps in nix I'd probably have a similar disbelieving reaction :P
<tazjin>
colemickens: uhh
* tazjin
hides various generic purpose Nix program
<tazjin>
+s
<tazjin>
nothing to see here
<colemickens>
tazjin: oh no, :( no no.
<colemickens>
I shouldn't have been so negative, plus my reaction when you said something was curiosity :P
<colemickens>
I think they're neat, and I hope to do something similar one day!
<colemickens>
tazjin: how about a desktop launcher tho :P
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<philipp[m]>
Does anybody have a clever way handy to execute a oneshot systemd service exactly twice?
<eyJhb>
&& .... start ....? :D
<eyJhb>
What is the end goal philipp[m] ? Why would you want to do it twice?
<philipp[m]>
I'm having some rsync backups here and it's nice to invoce rsync twice since you get a more consistent result the second time.
<eyJhb>
Why not just run the command two times then?
<philipp[m]>
I guess, I could.
<eyJhb>
If you have more than one, then make a function which takes the func as a argument and eval/exec it I guess
<philipp[m]>
Aha! I can run it a second time in ExecStartPre and prefix it with a `-`, so the exit code is ignored.
<eyJhb>
Ohh god :p
<philipp[m]>
That's actually pretty exactly what I want. First run best effort to try to get the environment as good as it gets, then run it and complain about all errors.
<eyJhb>
philipp[m]: sounds perfect then :D
<eyJhb>
I am really considering buying a new phone (I have a OnePlus One atm.) because I want 5g support. Any ideas?
<immae>
philipp[m]: or you can just put two ExecStart lines and they will get both executed :)
<philipp[m]>
immae: Nix doesn't like that though, does it?
<immae>
you need to put it as an array
<immae>
(note that it works only with oneshot systemd service type)
<V>
colemickens: my entire website is generated using an HTML templating language I wrote in Nix
<etu>
V: That sounds both painful and awesome :D
<etu>
V: But I generate my website using Emacs and Nix... :p
<V>
At the top of the file I have a comment containing a quote from the paper
<V>
"The Nix expression language is a simple, untyped, purely functional language. It is not a general purpose programming language. Its only purpose is to describe components and compositions."
<V>
etu: it is awesome!
<V>
My entire system is slowly turning into a NixOS config monorepo
<V>
I just run nixos-rebuild and I have a new copy of my website seamlessly deployed
<makefu>
V: welcome to the future! For me one of the main things is that my hosts "accidentally" install the latest version when i deploy new configuration with an udated nixpkgs rev. It may be a hassle sometimes but it is better than being scared of updating like in the old times
<V>
Hate it when I have up-to-date software ;)
<makefu>
you can also stay on your favorite nixpkgs rev forever and nobody can do anything about it!
<makefu>
in one of my configs i include nixpkgs-18.03 for an old version of nodejs
* etu
run some 19.09 on unstable for packages that have been dropped
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<aleph->
lejonet: Despite a wiped/blank firewall and an open port, having issues connecting my client to my server/routsr
<aleph->
Which is annoying. Didn't have this issue last time. Which is bothersome as I followed the guide verbatim on the wiki
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<lejonet>
aleph-: o.O no typo in the keys? I had that once, was very annoying
<aleph->
Seems to be that
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<pie_>
iirc there was a way to do something like sudo, but temporarily add an extra group, and i cant manage to ask google the right way to get the answer im looking for instead of a bunch of unrelated spam
<samueldr>
pie_: newgrp?
<pie_>
i cant quite tell from the man page if that just overwrites it so ill test
<samueldr>
pie_: SEE ALSO in that manpage might guide you
<pie_>
"newgrp: failed to crypt password with previous salt: Invalid argument" 0_o
<pie_>
todays yak shave: /dev/ttyACM0 gets recreated when i try to upload to my arduino so chmod downst work. also me: adding group is broken.
<pie_>
i could try fiddling with udev
<colemickens>
pie_: are you part of 'dialout' ?
<colemickens>
does that work for /dev/ttyACM0 too? I think it might?
<colemickens>
oh wait, maybe you already did that?
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<pie_>
thats what im trying to do
<pie_>
err, no im not part of dialout yet
<pie_>
i figured there should be a tool that can give it to me for a process
<pie_>
colemickens: well, newgrp worked if i add myself first
<pie_>
though actually at that point i probably might as well just use su or something so thats pointless
<samueldr>
IIRC groups can have a password
<samueldr>
for similar use cases
<samueldr>
but that's probably like a relic of some scheme of old times UNIX
<pie_>
ive also got an stm32 but the serial device for that doesnt show up for some reason even though i vaguely remember uploading ages ago the (presumably) blink example thats running on it right now
<pie_>
meh. should hook up the st-link thingy to it after i buy some new breadboard because the old one got disappeareds
<pie_>
actually the stlink is disappeared too . sigh
<pie_>
fml im going to bed
* colemickens
has weird emotions about supporting non-flake nix
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<colemickens>
cole-h: "It's not limited to channels", the things my brain rejects? :P or do you mean the <> syntax?
<cole-h>
<> :P
<cole-h>
e.g. I used it for accessing secret files at one point -- `secrets=/path/to/secrets` and <secrets/secret1>
<colemickens>
it's a good point, the evil derives from NIX_PATH.
<cole-h>
Yep
<cole-h>
Although I don't think NIX_PATH should ever go away...
<cole-h>
How else will I be able to get a repl with nixpkgs if not `nix repl '<pkgs>'`
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<V>
Have nix repl use nixpkgs implicitly? :p
<V>
That seems like the more user-friendly option
<samueldr>
but nix != nixpkgs!
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<cole-h>
^
<cole-h>
Sometimes I like doing `nix repl` to see how far I can get with builtins
<infinisil>
cole-h: :l <nixpkgs> inside the repl btw
<infinisil>
To import nixpkgs after starting
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<cole-h>
Yeah
<samueldr>
(still doesn't change the crux of the argument about NIX_PAT)
<samueldr>
NIX_PATH*
<cole-h>
Still requires <nixpkgs> (or an analogue) in NIX_PATH :P
<infinisil>
Ah
<infinisil>
:l channel:nixos-unstable
<infinisil>
:)
<samueldr>
but my <nixpkgs> points to [my custom fork, your custom fork, an old version, not nixpkgs]!
<infinisil>
(not sure if this was directed at me but channel:nixpkgs-unstable doesn't rely on <nixpkgs>)
<samueldr>
yeah, that's if you wanted to use your own nixpkgs that's not a nixos.org channel, it gets less ergonomic without a NIX_PATH or similar scheme
<cole-h>
I use `nix repl '<pkgs>'` because I have a shim that makes my overlayed packages available to it x)
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<elvishjerricco>
Wait wtf. With -e, a function in bash doesn't exit on the first failed command??
<cole-h>
`set -e; fjdskl` -> exits with 127
<cole-h>
WFM
<samueldr>
a function fn() {}?
<cole-h>
o
<samueldr>
it might be because of how it's used at its call-site
<samueldr>
>> Because once you are in a context that ignores 'set -e', the historical behavior is that there is no further way to turn it back on, for that entire body of code in the ignored context. That's how it was done 30 years ago, before shell functions were really thought about, and we are stuck with that poor design decision.