Re: pulling from my personal channel only - is this possible ?

[raingloom]

On Wed, 01 Sep 2021 20:44:47 +0100
Andreas Reuleaux <rx@a-rx.info> wrote:

> raingloom <raingloom@riseup.net> writes:
> 
> > None that I'm aware of, but you don't need to push/pull to test
> > anything. Just use the --load-path argument or the GUILE_LOAD_PATH
> > environment variable. That way you can use a local checkout.  
> 
> 
> 
> Well, OK, thanks:
> 
> I am experimenting, and apparently all three: guix pull, guix
> package, guix build accept a --load-path parameter:
> 
> * If I call guix pull with --load-path... it still takes ~ 53s,
>   and I wanted to do that only once per day, say -- ruling out this
>   possibility
> 
> * Thus I am trying to use a --load-path w/ guix package -i,
>   or guix package -u (instead of using my personal channel)
>   but with not too much success yet, cf. below

I don't think --load-path makes much sense for guix pull. Pretty sure
that would only make sense if you were modifying the guix or gnu
namespaces, or in other words, Guix itself.

> * maybe I should use --load-path w/ guix build instead ?
>   not sure, if this make sense in my case.

It does, that is how you should be building packages. Either with
--load-path or loading an expression from a file.

> Setting the stage now: with my personal channel set up, I can
> install a few haskell packages (not found in guix core yet):
> as specified in my manifest file:
> --8<---------------cut here---------------start------------->8---
> guix package -m ~/cfg/stuff/manifest-hs.scm
> --8<---------------cut here---------------end--------------->8---
> 
> with manifest-hs.scm:
> --8<---------------cut here---------------start------------->8---
> (specifications->manifest
>   (list
>    
>    ;; "cabal-install"
> 
>    "ghc"
>    
>    ;; [channel]
>    "ghc-filepattern"
> 
>    ;; [channel]
>    "ghc-formatting"
> 
>    ;; [channel]
>    "ghc-heaps"
> 
>    ;; [channel]
>    "ghc-js-dgtable"
> 
>    ;; [channel]
>    "ghc-map-syntax"
> 
>    ;; [channel]
>    "ghc-quickcheck-text"
> 
>    ;; [channel]
>    ;; "ghc-shake"
> 
>    ;; [channel]
>    "ghc-string-interpolate"
>       
>    ))
> --8<---------------cut here---------------end--------------->8---
> 
> [channel] comments therein indicate, that these packages are from my
> channel (just as a reminder for me), for example "ghc-formatting" is
> from my channel, whereas "ghc" is from guix core. -- "ghc-shake" used
> to work for me before, but now has issues - unrelated to my question
> though, thus commented out for now (and a good candidate maybe for
> building with guix build -f ghc-shake.scm).
> 
> 
> Those packages I get installed just fine
> (and note in particular, that ghc-formatting is at v7.1.3 -
> we will change that below):
> 
> --8<---------------cut here---------------start------------->8---
> rx@dell ~$ guix package -I
> ghc-string-interpolate        0.3.1.1.849b579 out
> /gnu/store/g8rw5ppn3sdfayzfgrdq79xy3b0jkz58-ghc-string-interpolate-0.3.1.1.849b579
> ghc-quickcheck-text   0.3.1.1.849b579 out
> /gnu/store/60wnvhmf4vjm23d85nxga4mxh2v5xhly-ghc-quickcheck-text-0.3.1.1.849b579
> ghc-map-syntax        0.3.02d857z     out
> /gnu/store/m3bawbfw6pqd9rrn6pwydi689dwbpjzc-ghc-map-syntax-0.3.02d857z
> ghc-js-dgtable        0.4-849b579     out
> /gnu/store/3g3nr1b0jl8syw52vq3dzqd0zfrq85m8-ghc-js-dgtable-0.4-849b579
> ghc-heaps             0.4-849b579     out
> /gnu/store/hp5d0dakjh17j92q7n1z656jhc3wbjhb-ghc-heaps-0.4-849b579
> ghc-formatting        v7.1.3.849b579  out
> /gnu/store/znblyzx2ki9fjx3a61m247ksgx6lc4vf-ghc-formatting-v7.1.3.849b579
> ghc-filepattern       0.1.2-849b579   out
> /gnu/store/jg1qyss1mms7iamplxkrbyicvc08n462-ghc-filepattern-0.1.2-849b579
> ghc                   8.8.4           out
> /gnu/store/0284m9ddms3w10zh1shgkimnjbidzy5j-ghc-8.8.4 git
>            2.33.0             out
> /gnu/store/g69aj4572bllw73phbpxqbpgqb7s3zyl-git-2.33.0 rx@dell ~$
> --8<---------------cut here---------------end--------------->8---
> 
> 
> 
> Now I remove my .config/guix/channels.scm:
> 
> --8<---------------cut here---------------start------------->8---
> rx@dell ~$ rm ~/.config/guix/channels.scm 
> --8<---------------cut here---------------end--------------->8---
> 
> pull again (just guix core this time):
> 
> --8<---------------cut here---------------start------------->8---
> rx@dell ~$ guix pull
> Updating channel 'guix' from Git repository at
> 'https://git.savannah.gnu.org/git/guix.git'... Building from this
> channel: guix      https://git.savannah.gnu.org/git/guix.git
> c75b30d Computing Guix derivation for 'x86_64-linux'... -
> --8<---------------cut here---------------end--------------->8---
> 
> and remove my packages:
> 
> --8<---------------cut here---------------start------------->8---
> rx@dell ~$ guix package -r ghc-string-interpolate ghc-quickcheck-text
> ghc-map-syntax ghc-js-dgtable ghc-heaps ghc-formatting
> ghc-filepattern The following packages will be removed:
> ghc-filepattern        0.1.2-849b579 ghc-formatting
> v7.1.3.849b579 ghc-heaps              0.4-849b579
>    ghc-js-dgtable         0.4-849b579
>    ghc-map-syntax         0.3.02d857z
>    ghc-quickcheck-text    0.3.1.1.849b579
>    ghc-string-interpolate 0.3.1.1.849b579
> 
> hint: Consider setting the necessary environment variables by running:
> 
>      GUIX_PROFILE="/home/rx/.guix-profile"
>      . "$GUIX_PROFILE/etc/profile"
> 
> Alternately, see `guix package --search-paths -p
> "/home/rx/.guix-profile"'.
> 
> rx@dell ~$ guix package -I
> ghc   8.8.4   out
> /gnu/store/0284m9ddms3w10zh1shgkimnjbidzy5j-ghc-8.8.4 git
> 2.33.0        out
> /gnu/store/g69aj4572bllw73phbpxqbpgqb7s3zyl-git-2.33.0 rx@dell ~$
> --8<---------------cut here---------------end--------------->8---
> 
> 
> 
> Now having my packages locally (as from a git clone for example - I am
> developing them on another (debian) machine really - thus git comes in
> handy to get them on my guix machine dell as well):
> 
> --8<---------------cut here---------------start------------->8---
> rx@dell ~/tmp$ git clone http://git.a-rx.info/channel/
> Cloning into 'channel'...
> --8<---------------cut here---------------end--------------->8---
> 
> 
> Now I try to install them w/ --load-path:
> 
> --8<---------------cut here---------------start------------->8---
> rx@dell ~$ guix package --load-path="/tmp/rx/channel" -m
> ~/cfg/stuff/manifest-hs.scm guix package: error: ghc-filepattern:
> unknown package guix package: error: failed to load
> '/home/rx/cfg/stuff/manifest-hs.scm': gnu/packages.scm:543:4: In
> procedure specification->package+output: Throw to key `quit' with
> args `(1)'. rx@dell ~$
> --8<---------------cut here---------------end--------------->8---
> 
> 
> Not too convincing :-( -

You probably used the wrong path. I've made that mistake before.
Testing it on one of my Guix systems:
```
root@blue ~# cd /tmp
root@blue /tmp# git clone http://git.a-rx.info/channel/
Cloning into 'channel'...
root@blue /tmp# guix package --load-path="/tmp/channel" --show=ghc-filepattern
name: ghc-filepattern
```