Re: `remove-ns' prevents namespace from being reloaded by `require' in clj 1.5.1 and 1.6

2014-09-23 Thread Laurent PETIT 
Le mardi 23 septembre 2014, Hugo Duncan  a écrit :

>
> laurent.pe...@gmail.com  writes:
>
> > Just a question so my understanding levels up: are there usecases where
> one
> > would use the current behavior of removing a namespace not also removing
> it
> > from *loaded-libs* (and thus preventing it from being required without
> > :reload) ?
>
> You can create namespaces without touching `require`, so I think it is
> reasonable to expect you can remove them too, without any side effects
> that will affect what `require` does.


*sigh* all this ns / lib dichotomy seems so unnecessarily complex

>
> Hugo
>


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Re: `remove-ns' prevents namespace from being reloaded by `require' in clj 1.5.1 and 1.6

2014-09-23 Thread Hugo Duncan 

laurent.pe...@gmail.com writes:

> Just a question so my understanding levels up: are there usecases where one
> would use the current behavior of removing a namespace not also removing it
> from *loaded-libs* (and thus preventing it from being required without
> :reload) ?

You can create namespaces without touching `require`, so I think it is
reasonable to expect you can remove them too, without any side effects
that will affect what `require` does.

Hugo


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Re: `remove-ns' prevents namespace from being reloaded by `require' in clj 1.5.1 and 1.6

2014-09-23 Thread Laurent PETIT 
2014-09-23 12:53 GMT+02:00 Hugo Duncan :

>
> laurent.pe...@gmail.com writes:
>
> > Le mardi 23 septembre 2014, Stuart Sierra 
> a
> > écrit :
> >
> >> I'm not sure I understand what you mean.
> >>
> >> `remove-ns` does not remove the namespace from the set of "loaded"
> >> namespaces kept by `require`.  tools.namespace
> >>  has a hack
> >> <
> https://github.com/clojure/tools.namespace/blob/a166936bd757b71348c7c1608569fc0fcb1318bd/src/main/clojure/clojure/tools/namespace/reload.clj#L19
> >
> >> to work around this.
> >>
> >
> > Can this be fixed for clojure 1.7 (integrate clojure.namespace hack into
> > 'remove-ns)? Or is there a reason I can't see right now in favor of the
> > current behavior?
>
> Or a new function added, e.g. `unload-ns`, that combines remove-ns with
> updating the ref.
>

Yeah, sure.

Just a question so my understanding levels up: are there usecases where one
would use the current behavior of removing a namespace not also removing it
from *loaded-libs* (and thus preventing it from being required without
:reload) ?



>
> Hugo
>



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Re: `remove-ns' prevents namespace from being reloaded by `require' in clj 1.5.1 and 1.6

2014-09-23 Thread Hugo Duncan 

laurent.pe...@gmail.com writes:

> Le mardi 23 septembre 2014, Stuart Sierra  a
> écrit :
>
>> I'm not sure I understand what you mean.
>>
>> `remove-ns` does not remove the namespace from the set of "loaded"
>> namespaces kept by `require`.  tools.namespace
>>  has a hack
>> 
>> to work around this.
>>
>
> Can this be fixed for clojure 1.7 (integrate clojure.namespace hack into
> 'remove-ns)? Or is there a reason I can't see right now in favor of the
> current behavior?

Or a new function added, e.g. `unload-ns`, that combines remove-ns with
updating the ref.

Hugo


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Re: `remove-ns' prevents namespace from being reloaded by `require' in clj 1.5.1 and 1.6

2014-09-22 Thread Laurent PETIT 
Hello,

Le mardi 23 septembre 2014, Stuart Sierra  a
écrit :

> I'm not sure I understand what you mean.
>
> `remove-ns` does not remove the namespace from the set of "loaded"
> namespaces kept by `require`.  tools.namespace
>  has a hack
> 
> to work around this.
>

Can this be fixed for clojure 1.7 (integrate clojure.namespace hack into
'remove-ns)? Or is there a reason I can't see right now in favor of the
current behavior?


> But `require ... :reload` should still work.
>
> -S
>
>
> On Monday, September 22, 2014 10:04:49 AM UTC-4, Daniel König wrote:
>>
>> Hi,
>>
>> after removing a namespace with the remove-ns form, I am not able to
>> require it a second time.
>> From what I can tell, I should be able to reload a namespace after
>> removing it.
>> This behaviour was found in Clojure 1.5.1 and Clojure 1.6.
>>
>> Example:
>>
>> => (require 'config :reload)
>> nil
>> => (remove-ns 'config)
>> #
>> => (require 'config :reload)
>> nil
>> => (remove-ns 'config)
>> nil
>>
>>
>>
>> Is this intentional or can it be considered broken?
>>
>> Best regards,
>> Daniel
>>
>


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Re: `remove-ns' prevents namespace from being reloaded by `require' in clj 1.5.1 and 1.6

2014-09-22 Thread Stuart Sierra 
I'm not sure I understand what you mean.

`remove-ns` does not remove the namespace from the set of "loaded" 
namespaces kept by `require`.  tools.namespace 
 has a hack 

 
to work around this.

But `require ... :reload` should still work.

-S


On Monday, September 22, 2014 10:04:49 AM UTC-4, Daniel König wrote:
>
> Hi,
>
> after removing a namespace with the remove-ns form, I am not able to 
> require it a second time.
> From what I can tell, I should be able to reload a namespace after 
> removing it.
> This behaviour was found in Clojure 1.5.1 and Clojure 1.6.
>
> Example:
>
> => (require 'config :reload)
> nil
> => (remove-ns 'config)
> #
> => (require 'config :reload)
> nil
> => (remove-ns 'config)
> nil
>
>
>
> Is this intentional or can it be considered broken?
>
> Best regards,
> Daniel
>

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Re: `remove-ns' prevents namespace from being reloaded by `require' in clj 1.5.1 and 1.6

2014-09-22 Thread Laurent PETIT 
I think it is broken, and I think I know who the culprit may be (me).

Before 1.5.1 (I guess), it was impossible to do things like that from e.g.
a live repl session:

(ns a)

(ns b (:require a))


because somehow the filesystem for ns a would be checked, no file found.

So a check was added to see whether ns a is already loaded or not, and if
already loaded, not try to reach for the filesystem.

It's weird, because I think I had checked that it wouldn't affect :reload /
:reload-all options, and all unit tests passed at that time.











2014-09-22 16:04 GMT+02:00 Daniel König :

> Hi,
>
> after removing a namespace with the remove-ns form, I am not able to
> require it a second time.
> From what I can tell, I should be able to reload a namespace after
> removing it.
> This behaviour was found in Clojure 1.5.1 and Clojure 1.6.
>
> Example:
>
> => (require 'config :reload)
> nil
> => (remove-ns 'config)
> #
> => (require 'config :reload)
> nil
> => (remove-ns 'config)
> nil
>
>
>
> Is this intentional or can it be considered broken?
>
> Best regards,
> Daniel
>
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`remove-ns' prevents namespace from being reloaded by `require' in clj 1.5.1 and 1.6

2014-09-22 Thread Daniel König 
Hi,

after removing a namespace with the remove-ns form, I am not able to 
require it a second time.
>From what I can tell, I should be able to reload a namespace after removing 
it.
This behaviour was found in Clojure 1.5.1 and Clojure 1.6.

Example:

=> (require 'config :reload)
nil
=> (remove-ns 'config)
#
=> (require 'config :reload)
nil
=> (remove-ns 'config)
nil



Is this intentional or can it be considered broken?

Best regards,
Daniel

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