Allowed distributions:
blag_90001 , blag_120000 , blag_140000 , debian , debian_6 , debian_7 , debian_8 , debian_9 , dragora_1_1 , dragora_2_0 , dragora_2_2 , dynebolic_2_5_2 , dynebolic_3_0_X , gnewsense_2_3 , gnewsense_3_0 , gnewsense_3_0_parkes , gnewsense_4_0 , guix_0_10 , musix_2_0 , musix_3_0_1 , parabola , pureos_8_0 , trisquel_3_5 , trisquel_4_0 , trisquel_4_5 , trisquel_5_0 , trisquel_5_5 , trisquel_6_0 , trisquel_7_0 , trisquel_8_0 , ututo_xs_2009 , ututo_xs_2010 , ututo_xs_2012_04 , venenux_0_8 , venenux_0_8_2 , venenux_0_9 , debian_testing , debian_unstable
Example: blag_90001,gnewsense_3_0,trisquel_4_0