Re: Unset environment variable when building rpm

[Patrick O'Callaghan]

On Fri, 2016-01-15 at 11:42 +0100, arnaud gaboury wrote:
> I need to unset one of my environment variable to successfully build
> a
> rpm package.
> 
> I added this in my .spec file, but apparently it doesn't work:
> 
> ---
> if [ -n $R_PROFILE_USER ];then
> unset R_PROFILE_USER
> fi
> 
> 
> What is the correct way to unset for build time a env variable?

Why do you need the test? Just unset it directly.

poc
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Unset environment variable when building rpm

[arnaud gaboury]

I need to unset one of my environment variable to successfully build a
rpm package.

I added this in my .spec file, but apparently it doesn't work:

---
if [ -n $R_PROFILE_USER ];then
unset R_PROFILE_USER
fi


What is the correct way to unset for build time a env variable?

Thank you
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Re: Unset environment variable when building rpm

[arnaud gaboury]

On Fri, Jan 15, 2016 at 12:46 PM, Patrick O'Callaghan
 wrote:
> On Fri, 2016-01-15 at 11:42 +0100, arnaud gaboury wrote:
>> I need to unset one of my environment variable to successfully build
>> a
>> rpm package.
>>
>> I added this in my .spec file, but apparently it doesn't work:
>>
>> ---
>> if [ -n $R_PROFILE_USER ];then
>> unset R_PROFILE_USER
>> fi
>> 
>>
>> What is the correct way to unset for build time a env variable?
>
> Why do you need the test? Just unset it directly.
ok. In case this variable does not exist, will the build stop?
Anyway to save the variable value, unset and restore at %post ?

>
> poc
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Re: Unset environment variable when building rpm

[arnaud gaboury]

On Fri, Jan 15, 2016 at 12:48 PM, arnaud gaboury
 wrote:
> On Fri, Jan 15, 2016 at 12:46 PM, Patrick O'Callaghan
>  wrote:
>> On Fri, 2016-01-15 at 11:42 +0100, arnaud gaboury wrote:
>>> I need to unset one of my environment variable to successfully build
>>> a
>>> rpm package.
>>>
>>> I added this in my .spec file, but apparently it doesn't work:
>>>
>>> ---
>>> if [ -n $R_PROFILE_USER ];then
>>> unset R_PROFILE_USER
>>> fi
>>> 
>>>
>>> What is the correct way to unset for build time a env variable?
>>
>> Why do you need the test? Just unset it directly.
> ok. In case this variable does not exist, will the build stop?
> Anyway to save the variable value, unset and restore at %post ?

After more tests, best is indeed to modify a binary option using the
alias function. I can't find any entry on this. Adding
alias foo='foo --option' does not work.


>
>>
>> poc
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>
>
>
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>
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Re: Unset environment variable when building rpm

[James Hogarth]

On 15 January 2016 at 14:01, arnaud gaboury  wrote:
> On Fri, Jan 15, 2016 at 12:48 PM, arnaud gaboury
>  wrote:
>> On Fri, Jan 15, 2016 at 12:46 PM, Patrick O'Callaghan
>>  wrote:
>>> On Fri, 2016-01-15 at 11:42 +0100, arnaud gaboury wrote:
 I need to unset one of my environment variable to successfully build
 a
 rpm package.

 I added this in my .spec file, but apparently it doesn't work:

 ---
 if [ -n $R_PROFILE_USER ];then
 unset R_PROFILE_USER
 fi
 

 What is the correct way to unset for build time a env variable?
>>>
>>> Why do you need the test? Just unset it directly.
>> ok. In case this variable does not exist, will the build stop?
>> Anyway to save the variable value, unset and restore at %post ?
>
> After more tests, best is indeed to modify a binary option using the
> alias function. I can't find any entry on this. Adding
> alias foo='foo --option' does not work.
>
>

Best plan for reproducible builds is to just use mock - then you get a
clean environment and don't have to worry about stuff like this,
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Re: Unset environment variable when building rpm

[arnaud gaboury]

On Fri, Jan 15, 2016 at 3:13 PM, James Hogarth  wrote:
> On 15 January 2016 at 14:01, arnaud gaboury  wrote:
>> On Fri, Jan 15, 2016 at 12:48 PM, arnaud gaboury
>>  wrote:
>>> On Fri, Jan 15, 2016 at 12:46 PM, Patrick O'Callaghan
>>>  wrote:
 On Fri, 2016-01-15 at 11:42 +0100, arnaud gaboury wrote:
> I need to unset one of my environment variable to successfully build
> a
> rpm package.
>
> I added this in my .spec file, but apparently it doesn't work:
>
> ---
> if [ -n $R_PROFILE_USER ];then
> unset R_PROFILE_USER
> fi
> 
>
> What is the correct way to unset for build time a env variable?

 Why do you need the test? Just unset it directly.
>>> ok. In case this variable does not exist, will the build stop?
>>> Anyway to save the variable value, unset and restore at %post ?
>>
>> After more tests, best is indeed to modify a binary option using the
>> alias function. I can't find any entry on this. Adding
>> alias foo='foo --option' does not work.
>>
>>
>
> Best plan for reproducible builds is to just use mock - then you get a
> clean environment and don't have to worry about stuff like this,

I am setting such a clean environment. Definitively the best solution.
TY
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Re: Unset environment variable when building rpm

[Jon LaBadie]

On Fri, Jan 15, 2016 at 12:48:58PM +0100, arnaud gaboury wrote:
> On Fri, Jan 15, 2016 at 12:46 PM, Patrick O'Callaghan
>  wrote:
> > On Fri, 2016-01-15 at 11:42 +0100, arnaud gaboury wrote:
> >> I need to unset one of my environment variable to successfully build
> >> a
> >> rpm package.
> >>
> >> I added this in my .spec file, but apparently it doesn't work:
> >>
> >> ---
> >> if [ -n $R_PROFILE_USER ];then
> >> unset R_PROFILE_USER
> >> fi
> >> 
> >>
> >> What is the correct way to unset for build time a env variable?
> >
> > Why do you need the test? Just unset it directly.
> ok. In case this variable does not exist, will the build stop?

The manpage for unset says its exit status is TRUE unless the
variable is marked READONLY.

> Anyway to save the variable value, unset and restore at %post ?
> 
> >
> > poc
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> 
> 
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Re: Unset environment variable when building rpm

[Michael Schwendt]

On Fri, 15 Jan 2016 12:48:58 +0100, arnaud gaboury wrote:

> >> ---
> >> if [ -n $R_PROFILE_USER ];then
> >> unset R_PROFILE_USER
> >> fi
> >> 
> >>
> >> What is the correct way to unset for build time a env variable?  
> >
> > Why do you need the test? Just unset it directly.  
> ok. In case this variable does not exist, will the build stop?
> Anyway to save the variable value, unset and restore at %post ?

You want to read up on what the %post section does, since it is
entirely unrelated to the build sections in a spec file.
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