gnu: Add Mr. Rescue.

  * gnu/packages/games.scm (mrrescue): New variable.
---
 gnu/packages/games.scm | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
  

宋文武 <iyzsong@gmail.com> writes:

> * gnu/packages/games.scm (mrrescue): New variable.
> ---
>  gnu/packages/games.scm | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 48 insertions(+)
>
> diff --git a/gnu/packages/games.scm b/gnu/packages/games.scm
> index d386e2c..8d321fc 100644
> --- a/gnu/packages/games.scm
> +++ b/gnu/packages/games.scm
> @@ -2856,3 +2856,51 @@ programmers may also add their own favorite language.")
>  application that locks the keyboard and mouse and instead displays bright
>  colors, pictures, and sounds.")
>      (license license:gpl3+)))
> +
> +(define-public mrrescue
> +  (package
> +    (name "mrrescue")
> +    (version "1.02e")
> +    (source (origin
> +              (method url-fetch)
> +              (uri (string-append
> +                    "https://github.com/SimonLarsen/mrrescue/releases/"
> +                    "download/" version "/" name version ".love"))
> +              (file-name (string-append name "-" version ".love"))

What is this file?  Are these sources or is this a binary image?

> +              (sha256
> +               (base32
> +                "0jwzbwkgp1l5ia6c7s760gmdirbsncp6nfqp7vqdqsfb63la9gl2"))))
> +    (build-system trivial-build-system)
> +    (arguments
> +     '(#:modules ((guix build utils))
> +       #:builder
> +       (begin
> +         (use-modules (guix build utils))
> +         (let* ((out     (assoc-ref %outputs "out"))
> +                (bindir  (string-append out "/bin"))
> +                (prog    (string-append bindir "/mrrescue"))
> +                (source  (assoc-ref %build-inputs "source"))
> +                (guile   (string-append (assoc-ref %build-inputs "guile")
> +                                        "/bin/guile"))
> +                (love    (string-append (assoc-ref %build-inputs "love")
> +                                        "/bin/love")))
> +           (mkdir-p bindir)
> +           (with-output-to-file prog
> +             (lambda ()
> +               (format #t "#!~a --no-auto-compile~%!#~%" guile)
> +               (write `(execl ,love "mrrescue" ,source))
> +               (newline)))
> +           (chmod prog #o755)
> +           #t))))

Is the “.love” file the source archive?  In the repository I only see
“.lua” files.  Shouldn’t we compile them from source?

~~ Ricardo
  

Am 17.09.2016 um 15:24 schrieb 宋文武:
> +         (let* ((out     (assoc-ref %outputs "out"))
> +                (bindir  (string-append out "/bin"))
> +                (prog    (string-append bindir "/mrrescue"))
> +                (source  (assoc-ref %build-inputs "source"))
> +                (guile   (string-append (assoc-ref %build-inputs "guile")
> +                                        "/bin/guile"))
> +                (love    (string-append (assoc-ref %build-inputs "love")
> +                                        "/bin/love")))
> +           (mkdir-p bindir)
> +           (with-output-to-file prog
> +             (lambda ()
> +               (format #t "#!~a --no-auto-compile~%!#~%" guile)
> +               (write `(execl ,love "mrrescue" ,source))
> +               (newline)))

This looks like you are creating a starter-script which is pointing to
the source. This will not work, since the source will not be installed
when installing the package.

You want to

- copy the source file into (string-append out "/share/" ,name)

- create a starter script

I also suggest using a shell-script as starter (instead of a guile
wrapper), since this is more natural for me.
  

Ricardo Wurmus <rekado@elephly.net> writes:

> 宋文武 <iyzsong@gmail.com> writes:
>
>> * gnu/packages/games.scm (mrrescue): New variable.
>> ---
>>  gnu/packages/games.scm | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
>>  1 file changed, 48 insertions(+)
>>
>> diff --git a/gnu/packages/games.scm b/gnu/packages/games.scm
>> index d386e2c..8d321fc 100644
>> --- a/gnu/packages/games.scm
>> +++ b/gnu/packages/games.scm
>> @@ -2856,3 +2856,51 @@ programmers may also add their own favorite language.")
>>  application that locks the keyboard and mouse and instead displays bright
>>  colors, pictures, and sounds.")
>>      (license license:gpl3+)))
>> +
>> +(define-public mrrescue
>> +  (package
>> +    (name "mrrescue")
>> +    (version "1.02e")
>> +    (source (origin
>> +              (method url-fetch)
>> +              (uri (string-append
>> +                    "https://github.com/SimonLarsen/mrrescue/releases/"
>> +                    "download/" version "/" name version ".love"))
>> +              (file-name (string-append name "-" version ".love"))
>
> What is this file?  Are these sources or is this a binary image?
>
>> [...]
>
> Is the “.love” file the source archive?  In the repository I only see
> “.lua” files.  Shouldn’t we compile them from source?

It's both the love2d package format and source archive [1], which is
just a zip file of the project directory.

[1] https://love2d.org/wiki/Game_Distribution
  

Hartmut Goebel <h.goebel@crazy-compilers.com> writes:

> Am 17.09.2016 um 15:24 schrieb 宋文武:
>> +         (let* ((out     (assoc-ref %outputs "out"))
>> +                (bindir  (string-append out "/bin"))
>> +                (prog    (string-append bindir "/mrrescue"))
>> +                (source  (assoc-ref %build-inputs "source"))
>> +                (guile   (string-append (assoc-ref %build-inputs "guile")
>> +                                        "/bin/guile"))
>> +                (love    (string-append (assoc-ref %build-inputs "love")
>> +                                        "/bin/love")))
>> +           (mkdir-p bindir)
>> +           (with-output-to-file prog
>> +             (lambda ()
>> +               (format #t "#!~a --no-auto-compile~%!#~%" guile)
>> +               (write `(execl ,love "mrrescue" ,source))
>> +               (newline)))
>
> This looks like you are creating a starter-script which is pointing to
> the source. This will not work, since the source will not be installed
> when installing the package.

Yes, but it works.  The source is referenced by the script, so it will
be downloaded into the store.

>
> You want to
>
> - copy the source file into (string-append out "/share/" ,name)
>
> - create a starter script
>
> I also suggest using a shell-script as starter (instead of a guile
> wrapper), since this is more natural for me.

OK, both are fine to me.