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bug#35640: Make USB modems just work on Guix

From: pelzflorian (Florian Pelz)
Subject: bug#35640: Make USB modems just work on Guix
Date: Tue, 14 May 2019 22:56:48 +0200
User-agent: NeoMutt/20180716

On Tue, May 14, 2019 at 10:35:55AM +0200, Danny Milosavljevic wrote:
> Should be
>    (inputs `(("libusb" ,libusb)
>              ("tcl" ,tcl:tcl)))

Yes I did mean that with comma, sorry.

> But I guess you meant that anyway.
> The problem is there's a use-modules cycle somewhere.
> Try putting usb-modeswitch in another module (a new one if necessary).

Using a new module helps, thank you!  Now I also do not need a prefix
tcl: anymore.  @Ludo: without that prefix, I got errors because 'zip
was redefined or something, I do not remember now.

Now only packaging issues remain.  When I use trivial-build-system,

         (use-modules (guix build utils)
                      (guix packages))
         (let ((source (assoc-ref %build-inputs "source"))
               (tar (assoc-ref %build-inputs "tar"))
               (bzip2 (assoc-ref %build-inputs "bzip2"))
               (share-dir (string-append %output "/share")))
           (copy-file source "data.tar.bz2")
           (invoke (string-append bzip2 "/bin/bzip2") "-d" "data.tar.bz2")
           (invoke (string-append tar "/bin/tar") "xvf" "data.tar")
           (install-file (string-append "usb-modeswitch-data-"
                                        (package-version this-package)
                                        "/usb_modeswitch.d") share-dir))

this package-version call seems not to work (at least not without more
adding more modules).  Is this the right approach?  Also I forgot, do
I need this #t at the end?

> Also, does it really require tcl?  Sounds kinda weird to me.

TCL is not needed for command-line mode switching, but there is a TCL
script called usb_modeswitch_dispatcher that gets called by the UDEV
rule and by the systemd service file shipped with USB_ModeSwitch.
This dispatcher automatically modeswitches USB devices that are
plugged in, I believe.


Attachment: 0001-Add-USB_ModeSwitch.patch
Description: Text document

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