bug#35640: Make USB modems just work on Guix

["pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de>]

On Sat, May 25, 2019 at 01:18:56PM +0200, pelzflorian (Florian Pelz) wrote:
> I added the --config-file option since by default
> usb_modeswitch_dispatcher loads its optional config file from /etc and
> a future Guix service type for USB_ModeSwitch should be able to pass a
> config file.
> […]
> +                 (substitute* "usb_modeswitch_dispatcher"
> +                   (("!/usr/bin/tclsh")
> +                    (string-append "!" jimtcl "/bin/jimsh"))
> +                   (("/usr/sbin") bin)
> +                   (("/usr/share/usb_modeswitch")
> +                    (string-append data "/share/usb_modeswitch.d"))
> +                   (("\\[ParseGlobalConfig\\]") ;use config in command line
> +                    "[ParseGlobalConfig $argv]")
> +                   (("proc \\{ParseGlobalConfig\\} \\{\\}")
> +                    "proc {ParseGlobalConfig} {argv}")
> +                   (("set configFile \\\"\\\"")
> +                    "
> +if {[lindex $argv 2] == \"--config-file\"} {
> +        set configFile [lindex $argv 3]
> +}"))


Or should I rather use a patch file instead of substitute*?