Re: How to Write Empty File in Build Phase?

[muradm <mail@muradm.net>]

May be something like this? (e-mail adhoc typing, may require 
fixing)

(define-public python-verspec
  (package
    (name "python-verspec")
    (version "0.1.0")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "verspec" version))
       (sha256
        (base32
         "07n06wv85fm4vl1ird2mja0823js3x322wgs9gdnq1djjyk4ql64"))
       (modules '((guix build utils)))
       (snippet
        '(with-directory-excursion "test"
           (with-output-to-file "__init__.py"
             (newline))))))
    (build-system python-build-system)
    (native-inputs
     `(("python-coverage" ,python-coverage)
       ("python-flake8" ,python-flake8)
       ("python-mypy" ,python-mypy)
       ("python-pretend" ,python-pretend)
       ("python-pytest" ,python-pytest)))
    (home-page
     "https://github.com/jimporter/verspec")
    (synopsis "Flexible version handling")
    (description "Flexible version handling")
    (license '(license:asl2.0 license:bsd-2))))

You can use (snippet of (origin, that allows pre phases actions on 
source before
any build steps/phases. (with-directory-excursion will basically 
"cd" to "test"
directory, (with-output-to-file will open file named 
"__init__.py", (newline)
will write empty line to just opened file.

Antwane Mason <ad.mason1413@gmail.com> writes:

> Hello,
>
> I am currently working to resolve a build issue of 
> python-verspec with the ultimate goal of submitting a package 
> for this
> package, onlykey-cli, and all other dependencies required for 
> onlykey-cli. Onlykey is a hardware password manager, second
> factor authenticator, and private key storage manager. A working 
> solution to the build problem is to include an empty
> __init__.py file in the test folder of the source code. How do I 
> write this file during a build phase?
>
> Here is the package definition for reference.
> -----------------------------------
> (define-public python-verspec
>   (package
>     (name "python-verspec")
>     (version "0.1.0")
>     (source
>       (origin
>         (method url-fetch)
>         (uri (pypi-uri "verspec" version))
>         (sha256
>           (base32
>             "07n06wv85fm4vl1ird2mja0823js3x322wgs9gdnq1djjyk4ql64"))))
>     (build-system python-build-system)
>     (native-inputs
>       `(("python-coverage" ,python-coverage)
>         ("python-flake8" ,python-flake8)
>         ("python-mypy" ,python-mypy)
>         ("python-pretend" ,python-pretend)
>         ("python-pytest" ,python-pytest)))
>     (home-page
>       "https://github.com/jimporter/verspec")
>     (synopsis "Flexible version handling")
>     (description "Flexible version handling")
>     (license '(license:asl2.0 license:bsd-2))))
> -----------------------------------
>
> Regards,
> Antwane