IRC channel logs

<pkill9>does `guix refresh -L` fail with an error for anyone else? "guix/import/cpan.scm:275:20: In procedure cpan-package?:"

***jonsger1 is now known as jonsger

<luciddreamzzz>does "cons*" somehow ignore default lists like '%base-packages'?

<luciddreamzzz>would think anything in addition to a default would then need cons* but it does not seem so

<nckx>luciddreamzzz: Where so?

<luciddreamzzz>nckx, ;; cons* adds items to the list given as its last argument.

<luciddreamzzz>i thought I saw a place where cons without * was used where there was %default and a single data type

<luciddreamzzz>OK it was a users file he uses "(cons (user-account..." then "%base-user-accounts))" at the end

<luciddreamzzz> https://www.gnu.org/software/guix/manual/en/html_node/Using-the-Configuration-System.html

<luciddreamzzz>maybe contributor i got config from github

<luciddreamzzz>I think I just need to remember: ;; cons* adds items to the list given as its last argument.

<nckx>luciddreamzzz: I'm still not really sure I understand your question, but then I'm also very tired.

<nckx>The difference between CONS and CONS* is only in how many arguments they accept. The last argument to both is a list, any list. The name of that list doesnt matter (it can be %default-packages or my-favourite-vegetables).

<nckx>(cons* a b c foo) is mere shorthand for (cons a (cons b (cons c foo))).

<nckx>Because CONS can only, well, cons one element at a time and that quickly becomes annoying.

<nckx>There's no other magic going on.

<luciddreamzzz>I think that makes sense

<luciddreamzzz>should it then be "(cons* (user-account..." then "%base-user-accounts))"?

<luciddreamzzz>and it _is_ a typo?

<luciddreamzzz>because he is cons two data elements: (user-account) and %base-user-accounts

<luciddreamzzz>if that parses i feel like it ignores lists, and * is implied??

<nckx>CONS takes exactly two arguments: an 'element' and a list. It adds the element to the list.

<luciddreamzzz>implied whenever using a list

<luciddreamzzz>OK i see

<luciddreamzzz>that was the other option :)

<nckx>(To the 'front', by the way.)

<luciddreamzzz>hmm alright

<luciddreamzzz>Thank you.

<nckx>If FOO is (a b c), then (cons d FOO) returns (d a b c).

<luciddreamzzz>OK yes that makes sense.

<luciddreamzzz>I do see that now, any time cons is used there is a %list

<nckx>Lists don't have to start with %, by the way, it's just a convention for certain global variable names. And not everyone follows that convention.

<luciddreamzzz>I was going to assume that from your example 'FOO' actually hmm

<nckx>One more thing: CONS is right in the example you posted, but as soon as you'd want to add two user accounts at once you'd want to use CONS*. And since (cons* x list) is equivalent to (cons x list), I always use CONS* in my configuration.

<luciddreamzzz>i see... good that will avoid confusion later also

<nckx>It's not necessary for me, but it solves this exact problem: people new to Scheme/Guix trying to learn by messing around (which is how I did it :-).

<nckx>Yup.

<luciddreamzzz>hehe :)

<luciddreamzzz>yeah I am trying to start by understanding the configuration system just going through each section

<nckx>Yeah, it's best to just dive in. Getting results is motivating. I had never even heard of Scheme (just Lisp) before I tried Guix. Now I'm... reasonably proficient?

<nckx>I'd dare say so.

*nckx → 😴

<nckx>Good luck!

<luciddreamzzz>Thank you again. Yeah I will keep plugging away! :)

<luciddreamzzz>That was helpful

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<rekado>Hi from Shenzhen!

<rekado>(just arrived)

<efraim>Hi!

<nico202>Is there a nix to guix cheatsheet? Sometimes I find myself wanting to replicate what I usually do on nix but don't know how. This time is: nix-env -f . -i package (to install a package from a local nixpkgs checkout)

<g_bor>hello guix!

<roptat>hi guix!

<roptat>nico202: from a git checkout of the guix repo, you can run ./pre-inst-env guix package -i [package] (or any guix command)

<roptat>is that what you wanted to know?

<nico202>rotmat: It might be.. the aim is to use my installed guix to install a package defined in the checkout

<roptat>the command I gave you uses the freshly built guix from your checkout

<roptat>we have a cheatsheet here: https://www.gnu.org/software/guix/guix-refcard.pdf

<nico202>roptat: thanks

***astronavt_ is now known as astronvat

***astronavt_ is now known as astronavt

<mbakke>janneke (IRC): I'm trying to build core-updates-next, but get a hash mismatch for /gnu/store/z1yrpzja9sivpi138xyjwxax575d7x4j-mes-stripped-0.18-0.08f04f5-x86_64-linux.tar.xz

<janneke>mbakke: ouch, oops eh -- that could be

<janneke>wait

<janneke>mbakke: indeed, i failed to upload the last bootstrap-mes build. fixed now.

<Laalf>can someone tell me how to fix "guix package: error: profile '/var/guix/profiles/per-user/root/guix-profile' does not exist"? i am running guixsd. the last thing i run before that was a guix gc. i didnt touch any of roots files or the store

<janneke>Laalf: what command did you issue that gives this error; does `guix package -i hello' fix it for you?

<Laalf>i somehow fixed it by deleting, reconfiguring, rebooting and installing a package

<Laalf>now root just says "bash-4.4#" but i could care less

<Laalf>but thanks janneke

<janneke>glad your system works again :-)

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***tilpner_ is now known as tilpner

***astronavt_ is now known as astronavt

***rekado_ is now known as rekado

<rekado>Hi Guix, here are my slides for the upcoming talk: https://elephly.net/downies/icg-2018-slides.pdf

<rekado>And here’s a script of what I intend to say: https://elephly.net/downies/icg-2018-slides.pdfpc

<rekado>(you can use pdfpc to view the slides together with the notes; see the patch at bug#33138)

<janneke>rekado: congrats on a beautiful talk, break a leg on the delivery!

<rekado>thanks!

<janneke>will there be a livestream? (one can always hope...:-)

<rekado>I think I should go to bed now (it’s almost 4am). The smoothie took me much too long to draw…

<rekado>the talk will be recorded.

<janneke>night!

<rekado>they’ll upload it to youtube and youku.

<pkill9>what event will this talk be at?

<apteryx>lfam: how did you test the modified git-fetch I proposed? When I tested at the REPL I could see the message.

<apteryx>I'll test it more thoroughly (I'll define it as git-fetch2, and use my git-fetch2 as part of the libssh package with an HTTP URL to see if it does get print there as well).

<nly>How should i be updating my guix system?

<nly>Sudo guix pull

<nly>Sudo guix system reconfigure config ?

<nly>This is what i have been doing

<nly>But i noticed that sometimes guix in my user profile commit xyz doesnt match up with one in root commit abc

<nly>s/root/root profile/

<nly>This can cause extra downloads

<nly>s/downloads/substitutions

<apteryx>nly: is this a GuixSD system?

<nly>Yep

<apteryx>simply, 'guix pull && guix package -u .' for your user profile

<apteryx>sudo -E guix system reconfigure your-config.scm for your system