Return a <file-append> object that expands to the concatenation of BASE and SUFFIX.

*Note: This API is subject to change; use at your own risk!*

Lower EXP, a gexp, instantiating it for SYSTEM and TARGET. Return a <lowered-gexp> ready to be used.

Lowered gexps are an intermediate representation that's useful for applications that deal with gexps outside in a way that is disconnected from derivations--e.g., code evaluated for its side effects.

Return #t if OBJECT leads to a file in the store once unquoted in a G-expression; otherwise return #f.

Return the absolute file name for FILE, a <local-file> instance. A 'system-error' exception is raised if FILE could not be found.

Return an executable script NAME that runs EXP using GUILE, with EXP's imported modules in its search path. Look up EXP's modules in MODULE-PATH.

Return as a monadic value a derivation that builds a text file containing all of TEXT. TEXT may list, in addition to strings, objects of any type that can be used in a gexp: packages, derivations, local file objects, etc. The resulting store file holds references to all these.

Return as a monadic value a gexp that sets '%load-path' and '%load-compiled-path' to point to MODULES, a list of module names. MODULES are searched for in PATH. Return #f when MODULES and EXTENSIONS are empty. Assume MODULES are compiled with GUILE.

Return an object representing the Scheme file NAME that contains GEXP.

This is the declarative counterpart of 'gexp->file'.

Turn SEXP into a gexp without any references.

Using this is a way for the caller to tell that SEXP doesn't need to be scanned for file-like objects, thereby reducing processing costs. This is particularly useful if SEXP is a long list or a deep tree.

Return the previously-authenticated commits under KEY as a list of commit IDs (hex strings).