Module detect 

libtorch installation detection and .arch metadata parsing.

Structs

LibtorchInfo

Metadata about an installed libtorch variant (from .arch file).

Functions

active_variant

This box’s active libtorch as (variant directory, variant label), anchored on root (a project root, or the global one).

is_valid_variant

Check whether a libtorch variant directory looks valid (has lib/).

ld_library_path_lines

The export lines a native-build recipe prints for a variant’s vendor, in order.

ld_library_path_value

LD_LIBRARY_PATH VALUE for running against libtorch_lib, in the order the loader must see it. The sibling of ld_library_path_lines, which prints the same ordering as a shell recipe; this one is for setting on a child process.

list_variants

List all installed libtorch variants under <root>/libtorch/.

local_rocm_lib_dir

The system ROCm runtime’s library directory on THIS box, for ld_library_path_value’s local callers.

read_active

Read the active libtorch variant from <root>/libtorch/.active and parse its .arch metadata.

read_active_from

Read any .active* pointer file and resolve its content (a relative path like precompiled/cu128 or builds/sm61-sm120) against libtorch_root to produce a LibtorchInfo.

set_active

Set the active libtorch variant by writing <root>/libtorch/.active.

unmet_loader_requirements

Unmet dynamic-linker requirements of a libtorch variant on THIS host, as the loader itself reports them.

variant_feature

The cargo feature a variant needs, or "" for a CPU-only variant.

variant_vendor

Which GPU stack a libtorch variant path targets, from its basename.