Can we get the absolute path of the tools provided by a package?

[Freed-Wu]

for example, https://github.com/xmake-io/xmake-repo/blob/dev/packages/f/ffmpeg/xmake.lua
provide tools ffprobe, ffmpeg, ffplay.
Can we get its absolute path in a target?

-- packageA provides tools toolA
add_requires("packageA")
target("main")
  add_packages("packageA")
  before_build(
    function (target)
      print("the used toolA is %s".format("toolA's path"))
    end
  )

[star-hengxing]

path.join(target:pkg("ffmpeg"):installdir(), "bin/ffmpeg")
or

-- add_packages("openjdk")
local envs = target:pkgenvs()
local java = assert(find_tool("java", {envs = envs}), "java not found!")

You can use xmake show -l apis to check more apis.

[Freed-Wu]

However, target:pkg("python"):installdir() is nil. why?

add_requires("python")
target("main")
  set_kind("phony")
  add_packages("python")
  before_build(
    function (target)
      print(string.format([[the used python is %s]], path.join(target:pkg("python"):installdir(), "bin/python")))
    end
  )

give:

the used python is nil/bin/python

[waruqi]

disable system python.

add_requires("python", {system = false})

[star-hengxing]

if not target:pkg("python"):is_system() then