Re: [gentoo-user] llvm install and python_fix_shebang: EPYTHON unset

[Andrew Lowe]

On 18/07/16 20:03, Fernando Rodriguez wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
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> On 07/18/2016 07:19 AM, Andrew Lowe wrote:
>> Hi all,
>>     I'm attempting to update llvm & clang and am getting a failure. Portage is reporting:
>>
>>  * ERROR: sys-devel/llvm-3.8.1::gentoo failed (install phase):
>>  *   python_fix_shebang: EPYTHON unset (pkg_setup not called?)
>>
>> I've looked in the ebuild and can't even find a mention of EPYTHON. I've tried:
>>
>> export EPYTHON=python3.5
>>
>> and
>>
>> export EPYTHON=python2.7
>>
>> and still the fail persists. Anyone got any thoughts on what could be going wrong?
>>
>>     Regards,
>>         Andrew
>>
>>
>
> It is set on python-single-r1.eclass. What is the output of these commands?
>
> # eselect python list
> # emerge -vp sys-devel/llvm

Fernando,
	Thanks for the reply. Output is as follows:

****************

bluey agl # eselect python list
Available Python interpreters, in order of preference:
   [1]   python3.5
   [2]   python3.4
   [3]   python2.7 (fallback)
bluey agl #

****************
Notice there is no asterisk indicating an "active" version as I would 
expect, like if I list opengl, opencl, ruby, binutils and others.

When I noticed this, I ran python-updater and got:

****************

bluey agl # python-updater
  * Starting Python Updater...
  * Main active version of Python:    3.5
  * Active version of Python 2:       2.7
  * Active version of Python 3:       3.5
  * Globally supported Python ABIs in installed repositories:
  *   agl:                            2.4 2.5 2.6 2.7 3.1 3.2 3.3 
2.5-jython 2.7-jython 2.7-pypy-1.7 2.7-pypy-1.8 2.7-pypy-1.9 2.7-pypy-2.0
  *   gentoo:                         2.4 2.5 2.6 2.7 3.1 3.2 3.3 
2.5-jython 2.7-jython 2.7-pypy-1.7 2.7-pypy-1.8 2.7-pypy-1.9 2.7-pypy-2.0
  *   nightmare:                      2.4 2.5 2.6 2.7 3.1 3.2 3.3 
2.5-jython 2.7-jython 2.7-pypy-1.7 2.7-pypy-1.8 2.7-pypy-1.9 2.7-pypy-2.0
  * No packages need to be reinstalled.

****************

Pretending to run the emerge gives me:

****************
bluey agl # emerge -vp sys-devel/llvm
  * WARNING: The FEATURES variable contains one or more values that
  * should be disabled under normal circumstances: keeptemp keepwork

These are the packages that would be merged, in order:

Calculating dependencies                      ... done!
[ebuild     U  ] sys-devel/llvm-3.8.1:0/3.8.0::gentoo 
[3.8.0-r3:0/3.8.0::gentoo] USE="clang libffi lldb ncurses 
static-analyzer xml -debug -doc -gold -libedit -multitarget -ocaml 
-python {-test}" ABI_X86="(64) -32 (-x32)" PYTHON_TARGETS="python2_7" 
VIDEO_CARDS="-radeon" 0 KiB
[ebuild     U  ] sys-devel/clang-3.8.1-r100:0/3.8::gentoo 
[3.8.0-r100:0/3.8::gentoo] USE="static-analyzer -debug -multitarget 
-python" ABI_X86="(64) -32 (-x32)" 0 KiB
[blocks b      ] <=sys-devel/clang-3.8.1-r99 
("<=sys-devel/clang-3.8.1-r99" is blocking sys-devel/llvm-3.8.1)

Total: 2 packages (2 upgrades), Size of downloads: 0 KiB
Conflict: 1 block

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  * Use eselect news read to view new items.

****************

	As the error happened during the install phase, I changed from 
"emerge...." to "ebuild llvm install". When this runs, the first line 
that is output is the following:

python-exec: EPYTHON value invalid (/usr/bin/python2.7).

	Anything else you need?

	Regards,
		Andrew