[mythtv-users] failure on v31 mythplugins on clean install

[Mike Bibbings]

On 08/03/2020 10:46, Mike Bibbings wrote:
> On 07/03/2020 20:24, Bill Meek wrote:
>> On 3/6/20 8:57 AM, James Abernathy wrote:
>>>
>>>> On Mar 6, 2020, at 9:40 AM, Bill Meek <keemllib at gmail.com> wrote:
>>>>
>>>> On 3/6/20 5:35 AM, Jim Abernathy wrote:
>>>>> Since I had a problem upgrading mythweb on my development system 
>>>>> again, I tried a fresh build. I wiped the hard drive and 
>>>>> reinstalled Ubuntu 18.04.4 and then mythtv.
>>>>> However, when I got to mythplugins I got this error on mythweb:
>>>>> Selecting previously unselected package mythweb.
>>>>> Preparing to unpack 
>>>>> .../117-mythweb_2%3a31.0+fixes.202003051106.1460627~ubuntu18.04.1_all.deb 
>>>>> ...
>>>>> /var/lib/dpkg/tmp.ci/preinst: 7: /var/lib/dpkg/tmp.ci/preinst: 
>>>>> php: not found
>>>>
>>>> ...
>>>>
>>>> php again. Last time you reported, php was there because
>>>> php -r 'echo PHP_MAJOR_VERSION, ".", PHP_MINOR_VERSION;'
>>>> worked. I'll comment more in the the related thread
>>>> this morning.
>>>>
>>>> php -r 'echo PHP_MAJOR_VERSION, ".", PHP_MINOR_VERSION;’ didn’t 
>>>> work this time on a clean system with no mythplugins installed.
>>>
>>> I then installed php 7.2 and I could then install mythplugins 
>>> correctly.
>>>
>>> I can’t say I know why, but this worked.  Hopefully all this will 
>>> get fixed at some point for a clean install of mythtv and 
>>> mythplugins on Ubuntu 18.04
>>
>> Spun up 18.04 today. php7.2 is installed OK. But, there's no entry 
>> for php in /etc/alternatives.
>>
>> php7.2-cli.postinst has code that COULD installing alternatives. 
>> Haven't found a solution
>> yet. I was testing apt install mythweb though, not mythplugins.
>>
>>
> Bill,
>
> As you may have found out, the problem is due to php not having been 
> installed at the time mythweb.preinst is run, so 
> CURRENT_PHP_VERSION=$(php -r 'echo PHP_MAJOR_VERSION, ".", 
> PHP_MINOR_VERSION;') fails as php not found:
>
> Selecting previously unselected package mythweb.
> Preparing to unpack 
> .../123-mythweb_2%3a31.0+fixes.202003052109.7097da3~ubuntu18.04.1_all.deb 
> ...
> /var/lib/dpkg/tmp.ci/preinst: 7: /var/lib/dpkg/tmp.ci/preinst: php: 
> not found
> dpkg: error processing archive 
> /tmp/apt-dpkg-install-LbyUJ4/123-mythweb_2%3a31.0+fixes.202003052109.7097da3~ubuntu18.04.1_all.deb 
> (--unpack):
>  new mythweb package pre-installation script subprocess returned error 
> exit status 127
> postrm called with unknown argument `abort-install'
> dpkg: error while cleaning up:
>  new mythweb package post-removal script subprocess returned error 
> exit status 1
>
> command used sudo apt install mythtv mythplugins
>
> sudo apt --fix-broken install (run it twice) followed by sudo apt 
> install mythplugins seems to resolve.
>
> I am not sure we even need mythweb.preinst to do anything as the only 
> thing it does is move 20-mythweb.conf , which mythweb.postinst does 
> anyway (but php should have been installed by this time)
>
>
> Mike
>
Bill,

Another thought.

In mythweb.preinst add a test to check if php exists e.g. 'which php' 
and only run CURRENT_PHP_VERSION=$(php -r 'echo PHP_MAJOR_VERSION, ".", 
PHP_MINOR_VERSION;') if 'which' returns a good result.


Mike