Setup Environment for Remote File Access

Sets the HTS_PATH environment variable to point to the bundled htslib plugins directory. This is required for S3, GCS, and other remote file access via libcurl.

Usage

setup_hts_env()

Value

Invisibly returns the previous value of HTS_PATH (or NA if unset).

Details

Call this function before using bcftools/htslib tools with remote URLs (s3://, gs://, http://, etc.). The function sets HTS_PATH to the package's plugin directory so htslib can find hfile_libcurl.so and hfile_gcs.so.

Examples

setup_hts_env()
# Now bcftools can access S3 URLs