which -a orca
~/.conda/envs/dev_env/bin/orca

withr::with_path(new = normalizePath(
    file.path(path.expand("~"), ".conda", "envs", "dev_env", "bin", "orca")
),
action = "prefix",
code {
# export graph, not relevant
 })

withr::with_path(new = normalizePath(file.path(
    "~", ".conda", "envs", "dev_env", "bin", "orca"
)),
action = "prefix",
code = {
    Sys.which("orca")

})

# orca
#  ""