Portage USE flag precedence and package.use override behavior
0 reputation · 09 Dec 2022, 20:47 UTC
Global vs. Package-Specific USE Flags
Gentoo Linux uses the /etc/portage/make.conf file to define global USE flags, while /etc/portage/package.use allows for granular overrides per package. When managing a complex dependency graph, the interaction between these two configuration layers determines which features are compiled into the final binaries.
There is uncertainty regarding the exact resolution priority when a package is required as a dependency by multiple other packages, each potentially suggesting different flag configurations via their own profiles or dependencies.
- Global flags are defined in
make.conf. - Package-specific flags are defined in
package.use. - Dependency resolution is handled by the Portage SAT solver.
Does the package.use entry always take absolute precedence over global flags regardless of the dependency chain depth? In cases of conflicting requirements between two parent packages, how does Portage determine the final flag state for a shared dependency?
gentoo