Read the manifest of PROFILE and evaluate the values of search path environment variables required by PROFILE; return a list of specification/value pairs. If MANIFEST is not #f, it is assumed to be the manifest of PROFILE, which avoids rereading it.

Use GETENV to determine the current settings and report only settings not already effective.

Delete generation with NUMBER from PROFILE. Return the file name of the generation that has been deleted, or #f if nothing was done (for instance because the NUMBER is zero.)

Set the environment variables specified by MANIFEST for PROFILE. When PURE? is #t, unset the variables in the current environment except those that match the regexps in WHITE-LIST-REGEXPS and those listed in WHITE-LIST. Otherwise, augment existing environment variables with additional search paths.

Return the PROFILE's manifest.

Return a derivation that builds a single-file bundle containing the CA certificates in the /etc/ssl/certs sub-directories of the packages in MANIFEST. Single-file bundles are required by programs such as Git and Lynx.

Compute the effect of applying TRANSACTION to MANIFEST. Return 4 values: the list of packages that would be removed, installed, upgraded, or downgraded when applying TRANSACTION to MANIFEST. Upgrades are represented as pairs where the head is the entry being upgraded and the tail is the entry that will replace it.

Return PROFILE's generation specified by SPEC, which is a string. The SPEC may be a N, -N, or +N, where N is a number. If the spec is N, then the number returned is N. If it is -N, then the number returned is the profile's current generation number minus N. If it is +N, then the number returned is the profile's current generation number plus N. Return #f if there is no such generation.

Return the entries of MANIFEST along with their propagated inputs, recursively.

Return true if ENTRY1 is equivalent to ENTRY2, ignoring their 'properties' field.

Register THUNK as a profiling hook for COMPONENT, a string such as "rpc".