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Hi, |
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Portage does not turn on USE flags of a package to satisfy a |
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dependency, which is sometimes confusing. |
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|
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See https://bugs.gentoo.org/372513 |
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|
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mattst88@localhost ~/projects/gentoo-x86/sci-chemistry $ emerge cns -vp |
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|
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These are the packages that would be merged, in order: |
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|
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Calculating dependencies... done! |
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[ebuild N ] sys-libs/libstdc++-v3-3.3.6 USE="(multilib) nls" 23,459 kB |
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[ebuild N ] app-shells/tcsh-6.16 USE="perl -catalogs" 869 kB |
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[ebuild N ] app-emulation/emul-linux-x86-compat-20100611 |
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USE="(multilib)" 930 kB |
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[ebuild N ] virtual/libstdc++-3.3 0 kB |
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[ebuild N ] dev-lang/ifc-10.0.026-r1 40,378 kB |
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[ebuild N ] virtual/fortran-0 USE="openmp" 0 kB |
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[ebuild N F ] sci-chemistry/cns-1.2.1 USE="openmp" 31,981 kB |
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|
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Total: 7 packages (7 new), Size of downloads: 97,614 kB |
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Fetch Restriction: 1 package (1 unsatisfied) |
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mattst88@localhost ~/projects/gentoo-x86/sci-chemistry $ USE=fortran |
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emerge cns -vp |
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|
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These are the packages that would be merged, in order: |
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|
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Calculating dependencies... done! |
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[ebuild R ~] sys-devel/gcc-4.5.2 USE="fortran* graphite gtk lto |
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mudflap (multilib) nls nptl openmp (-altivec) -bootstrap -build -doc |
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(-fixed-point) -gcj (-hardened) (-libffi) -multislot -nocxx -nopie |
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-nossp -objc -objc++ -objc-gc -test -vanilla (-n32%) (-n64%)" 0 kB |
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[ebuild N ] app-shells/tcsh-6.16 USE="perl -catalogs" 869 kB |
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[ebuild N ] virtual/fortran-0 USE="openmp" 0 kB |
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[ebuild N F ] sci-chemistry/cns-1.2.1 USE="openmp" 31,981 kB |
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|
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Total: 4 packages (3 new, 1 reinstall), Size of downloads: 32,849 kB |
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Fetch Restriction: 1 package (1 unsatisfied |
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|
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I'm sure there are good reasons for this behavior, but I'm not sure |
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what they are. |
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|
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I wonder if there's some way we can manage this kind of situation? |
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Perhaps portage could print alternative dependencies for virtuals, |
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similar to the very helpful recent "The following keyword changes are |
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necessary to proceed:" addition. |
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|
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Another similar situation is with ACCEPT_LICENSES. Attempting to |
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emerge something like virtual/jre will suggest adding keywords for |
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dev-java/ibm-jdk-bin, even though I'm on a mips system and this |
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package will never run there. Suggesting other packages that fulfill |
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virtual/jre would be much easier to understand. |
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|
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Thanks! |
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Matt |
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