John Darrington <jmd@gnu.org> writes:

> * gnu/packages/vtk.scm (vtk@6.3): New variable.
> ---
>  gnu/packages/vtk.scm | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/gnu/packages/vtk.scm b/gnu/packages/vtk.scm
> index 5a5c941..ad12187 100644
> --- a/gnu/packages/vtk.scm
> +++ b/gnu/packages/vtk.scm
> @@ -91,3 +91,19 @@ triangulation.  VTK has an extensive information visualization framework, has
>  a suite of 3D interaction widgets, supports parallel processing, and
>  integrates with various databases on GUI toolkits such as Qt and Tk.")
>      (license bsd-3)))
> +
> +
> +;; Mia 2.4.3 doesn't work against vtk7 so we package vtk 6.3 for it:
> +(define-public vtk@6.3
> +  (package
> +    (inherit vtk)
> +    (version "6.3.0")
> +    (source (origin
> +              (method url-fetch)
> +              (uri (string-append "http://www.vtk.org/files/release/"
> +                                  (version-major+minor version)
> +                                  "/VTK-" version ".tar.gz"))
> +              (sha256
> +               (base32
> +                "0pla1r5mvkgl4sl213gfdhzrypdgai0h3z5mfgm6p9jz9hsr794j"))))))
> +

This doesn't build reproducibly for me, but it lints fine.