The setup/dirs library provides several procedures for locating installation directories:

Returns a path to the installation’s main "collects" directory, or #f if none can be found. A #f result is likely only in a stand-alone executable that is distributed without libraries.

Returns a path to the user-specific "collects" directory; the directory indicated by the returned path may or may not exist.

Returns the same result as (current-library-collection-paths), which means that this result is not sensitive to the value of the use-user-specific-search-paths parameter.

Returns a path to the installation’s "doc" directory. The result is #f if no such directory is available.

Returns a path to a user-specific "doc" directory. The directory indicated by the returned path may or may not exist.

Returns a list of paths to search for documentation, not including documentation stored in individual collections. Unless it is configured otherwise, the result includes any non-#f result of (find-doc-dir) and (find-user-doc-dir)—but the latter is included only if the value of the use-user-specific-search-paths parameter is #t.

Returns a path to the installation’s "lib" directory, which contains libraries and other build information. The result is #f if no such directory is available.

Returns a path to the directory that contains DLLs for use with the current executable (e.g., "libmzsch.dll" under Windows). The result is #f if no such directory is available, or if no specific directory is available (i.e., other than the platform’s normal search path).

Returns a path to a user-specific "lib" directory; the directory indicated by the returned path may or may not exist.

Returns a list of paths to search for libraries. Unless it is configured otherwise, the result includes any non-#f result of (find-lib-dir), (find-dll-dir), and (find-user-lib-dir)—but the last is included only if the value of the use-user-specific-search-paths parameter is #t.

Returns a path to the installation’s "include" directory, which contains ".h" files for building MzRacket extensions and embedding programs. The result is #f if no such directory is available.

Returns a path to a user-specific "include" directory; the directory indicated by the returned path may or may not exist.

Returns a list of paths to search for ".h" files. Unless it is configured otherwise, the result includes any non-#f result of (find-include-dir) and (find-user-include-dir)—but the latter is included only if the value of the use-user-specific-search-paths parameter is #t.

Returns a path to the installation’s executable directory, where the stand-alone MzRacket executable resides. The result is #f if no such directory is available.

Returns a path to the installation’s executable directory, where the stand-alone GRacket executable resides. The result is #f if no such directory is available.

A binary boolean flag that is true if this installation is using absolute path names.