[Agda] how to reference to a version

[Sergei Meshveliani]

On Thu, 2016-12-08 at 22:43 +0300, Sergei Meshveliani wrote:
> On Thu, 2016-12-08 at 19:30 +0100, Ulf Norell wrote:
> > Each commit of Agda contains a reference to the particular commit of
> > the standard library
> > that it has been tested with. To find out which one you can do the
> > following (after checking
> > 
> > out the commit of Agda that you are interested in):
> > 
> > 
> > $ git submodule init
> > Submodule 'std-lib' (https://github.com/agda/agda-stdlib) registered
> > for path 'std-lib'
> > $ git submodule update
> > Cloning into 'std-lib'...
> > Submodule path 'std-lib': checked out
> > '7220ca3ee025e9339aa8e5d11efcd069764e7977'
> > $ cd std-lib
> > $ git status
> > HEAD detached at 7220ca3
> > 
> > 
> > So the commit of the standard library that works with the Agda commit
> > I tested this on is
> > 7220ca3. This is probably the easiest way for your users to get a
> > compatible version of
> > the standard library as well, saving them the trouble of keeping track
> > of two commit hashes.
> > 
> 
> 
> I am trying to find out what is the whole installation process.
> 
> For example, I have downloaded  agda-2.5.2-dc9ffae
> by running the commands
> 
>   > git clone https://github.com/agda/agda.git
>   > cd agda
>   > git checkout dc9ffae
> 
> Then I install Agda by
> 
>   > cabal update
>   > cabal install
>   > agda-mode compile
> 
> Then I need to download the needed Standard library version.
> To do this, I command 
> 
>   > cd agda
>   > git submodule init
>   Submodule 'std-lib' (https://github.com/agda/agda-stdlib) 
>   registered for path 'std-lib'
> 
>   > git submodule update
>   Cloning into std-lib...
>   ...
>   Submodule path 'std-lib': checked out          
>   '7220ca3ee025e9339aa8e5d11efcd069764e7977'
>   
>   > cd std-lib
> 
> Initially this directory was empty. And now is has the files of the
> needed library version.
> Right?
> 
> To install the library, I command  
> 
>   > cabal install


But there is not any .cabal file.
And I have an impression that 

  > git submodule update

has already installed the needed library.

------
Sergei