Re: [PATCH 1/2] meta/classes/base: extend sys.path with lib directory

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2018-02-14 14:15, [ext] claudius.heine.ext@siemens.com wrote:
> From: Claudius Heine <ch@denx.de>
> 
> Currently scripts and modules that are placed in the 'lib' directory of
> layers are not available in the recipes.
> 
> This change adds the required code to the base.bbclass in order to have
> those imports available.
> 
> This change contains code from:
> http://git.openembedded.org/openembedded-core/tree/meta/classes/base.bbclass?id=4a4eff9b9e3c614ff41b17cbec359b72dcbd41bd
> 
> Signed-off-by: Claudius Heine <ch@denx.de>
> ---
>  meta/classes/base.bbclass | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
> index ae84677..3334789 100644
> --- a/meta/classes/base.bbclass
> +++ b/meta/classes/base.bbclass
> @@ -37,6 +37,30 @@ bbfatal() {
>  	exit 1
>  }
>  
> +# Derived from openembedded-core/meta/classes/base.bbclass
> +ISAR_IMPORTS += "os sys time"
> +
> +def isar_imports(d):
> +	import sys
> +
> +	bbpath = d.getVar("BBPATH").split(":")
> +	sys.path[0:0] = [os.path.join(dir, "lib") for dir in bbpath]
> +
> +	def inject(name, value):
> +		"""Make a python object accessible from the metadata"""
> +		if hasattr(bb.utils, "_context"):
> +			bb.utils._context[name] = value
> +		else:
> +			__builtins__[name] = value
> +
> +	for toimport in d.getVar("ISAR_IMPORTS", True).split():
> +		imported = __import__(toimport)
> +		inject(toimport.split(".", 1)[0], imported)
> +
> +	return ""
> +
> +ISAR_IMPORTED := "${@isar_imports(d)}"
> +
>  # Derived from bitbake: bitbake/classes/base.bbclass
>  addtask showdata
>  do_showdata[nostamp] = "1"
> 

Henning, does this help with selecting wic plugins as well? Or does wic
express its search paths differently and would not be affected by this
change?

Jan

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