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Maciej Mrozowski wrote: |
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> Hi |
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> |
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> I'd like to raise your attention on problem of in my opinion overusing |
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IUSE |
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> defaults in various packages. |
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> Currently there seems to be no policy whatsoever at least advising when |
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it's |
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> appropriate to add +<useflag> and when not, so it's just up to developer's |
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> taste. |
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> While it usually doesn't do any particular harm (but I guess security and |
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> prefix/alt team won't agree on this) - insanely enabling everything by |
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default |
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> is not the best idea in my opinion. |
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> Of course we need an example. Let's have a look at latest stable media- |
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> video/mplayer-1.0_rc2_p20090322 ebuild: |
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> |
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> IUSE="3dnow 3dnowext +a52 +aac aalib +alsa altivec +amrnb +amrwb arts +ass |
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> bidi bindist bl +cddb +cdio cdparanoia -cpudetection -custom-cflags |
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> -custom-cpuopts debug dga +dirac directfb doc +dts +dv dvb +dvd +dvdnav |
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dxr3 |
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> +enca +encode esd +faac +faad fbcon ftp gif ggi -gtk +iconv ipv6 jack |
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> joystick jpeg kernel_linux ladspa libcaca lirc +live lzo mad md5sum +mmx |
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> mmxext mng +mp2 +mp3 musepack nas +nemesi +network openal +opengl oss |
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png pnm |
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> pulseaudio pvr +quicktime radio +rar +real +rtc -samba |
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> +schroedinger sdl +speex sse sse2 ssse3 svga teletext tga +theora +tremor |
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> +truetype +unicode v4l v4l2 vdpau vidix +vorbis -win32codecs +X +x264 xanim |
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> xinerama +xscreensaver +xv +xvid xvmc zoran" |
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|
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|
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moreover, there are certain USE flags that do not make sense in |
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IUSE="+<flag>". |
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for example alsa: if I use alsa, I want alsa globally enable in |
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/etc/make.conf |
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if I not use it (e.g. not in my profile) why should I explicitly put |
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- -alsa in $USE? |
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this may lead to an explosion of -<flag> flags in $USE. |
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|
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probably this example falls back into the "flag which pulls |
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dependencies" case, but it is one more argument. |
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|
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|
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configure scripts already have default values for the configure |
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switches, and ebuilds should try to follow the defaults by putting |
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+<flag> where needed, but with some exceptions (maybe on a |
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flag-by-flag basis, or -more generally- by use-case, like you just wrote) |
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|
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- -- |
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mescalinum@g.o |
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