Alan Mackenzie <[email protected]> wrote: >On Mon, Jan 14, 2013 at 05:04:35PM +0530, Yohan Pereira wrote: >> On 14/01/13 at 11:18am, Alan Mackenzie wrote: >> > Hi, Gentoo. > >> > Would somebody please help me with this error message, which arose >from >> > # emerge -puND world >> > : > >> > These are the packages that would be merged, in order: > >> > Calculating dependencies \ > >> > !!! Problem resolving dependencies for media-gfx/sane-backends from >@selected >> > ... done! > >> > !!! The ebuild selected to satisfy "media-gfx/sane-backends" has >unmet requirements. >> > - media-gfx/sane-backends-1.0.23::gentoo USE="ipv6 (multilib) usb >-avahi -doc -gphoto2 -threads -v4l -xinetd" SANE_BACKENDS="abaton >agfafocus apple artec artec_eplus48u as6e avision bh canon canon630u >canon_dr canon_pp cardscan coolscan coolscan2 coolscan3 dc210 dc240 >dc25 dell1600n_net dmc epjitsu epson epson2 fujitsu genesys gt68xx hp >hp3500 hp3900 hp4200 hp5400 hp5590 hpljm1005 hpsj5s hs2p (ibm) kodak >kodakaio kvs1025 kvs20xx kvs40xx leo lexmark ma1509 magicolor >matsushita microtek microtek2 mustek mustek_pp mustek_usb mustek_usb2 >nec net niash p5 pie pixma plustek plustek_pp qcam ricoh rts8891 s9036 >sceptre sharp sm3600 sm3840 snapscan sp15c st400 stv680 tamarack teco1 >teco2 teco3 test u12 umax umax1220u umax_pp xerox_mfp -pnm" > >> > The following REQUIRED_USE flag constraints are unsatisfied: > <============================================= >> > sane_backends_mustek_usb2? ( threads ) sane_backends_kvs40xx? ( >threads ) > >> > (dependency required by "@selected" [set]) >> > (dependency required by "@world" [argument]) > >> > >######################################################################## > >> > I'm mystified as to what a "REQUIRED_USE flag constraint" is. What >is >> > the significance of "sane_backends_mustek_usb2"? It would appear >not to >> > be a use flag. What is the significance of "( threads )"? > >> Bassicly its emerge is telling you that if you have >> sane_backends_mustek_usb2 enabled you also need to enable threads and >> similarly if you have sane_backends_kvs40xx enabled you need to >enable >> threads. So in your case you need to enable threads or disable those >2 >> backends. > >Ah, it looks so obvious now. ;-) Thanks! > >Another question - is there any sensible way of cutting the unnecessary >stuff out of SANE_BACKENDS? That variable is set in the ebuild, and it >doesn't feel the Right Thing to edit the ebuild file. > >> -- > >> - Yohan Pereira
Set it in 'make.conf'. -- Joost -- Sent from my Android phone with K-9 Mail. Please excuse my brevity.
