Hi Ludo,


I have noticed that the non-termination problem is not confined to the
opencascage_oce package. If I try 

$ nix-instantiate --strict --eval --xml -A guile
/home/paul/.nix-defexpr/channels/nixpkgs

that does not terminate either.


Does it just take long, or does it simply not terminate?

After a few (approximately five) minutes the process is still producing xml. Looking at the output, after killing the process, there is a large amount of blank space plus the occasional line of xml, such as:


$ nix-instantiate --version
nix-instantiate (Nix) 1.11.2

For my nix installation:

$ nix-instantiate --version

nix-instantiate (Nix) 1.11.4

Also, I have cloned the nixpkgs repository so that I can change the version more easily. To set the nixpkgs directory to be the same version as the version you are using:

$ git checkout dde259d

Then I get the same output:

$ export NIX_REMOTE=daemon

$ ./pre-inst-env guix import nix /data/paul/sourceCode/nixpkgs opencascade_oce

;;; SSAX warning: Skipping PI: xml

trace: lib.zip is deprecated, use lib.zipAttrsWith instead

trace: `mkStrict' is obsolete; use `mkOverride 0' instead.

trace: `types.list' is deprecated; use `types.listOf' instead

;; converted from /data/paul/sourceCode/nixpkgs/pkgs/development/libraries/opencascade/oce.nix:5

(package

(name "opencascade-oce")

(version "0.16")

(source

(origin

(method url-fetch)

(uri (string-append

"https://github.com/tpaviot/oce/archive/OCE-"

version

".tar.gz"))

(sha256

(base32

"05bmg1cjz827bpq8s0hp96byirm4c3zc9vx26qz76kjsg8ry87w4"))))

(build-system gnu-build-system)

(inputs

`(("cmake" ,cmake)

("freetype" ,freetype)

("ftgl" ,ftgl)

("qt" ,qt)

("libtool" ,libtool)

("libXmu" ,libXmu)

("file" ,file)

("tk" ,tk)

("tcl" ,tcl)

("mesa" ,mesa)))

(home-page "http://www.opencascade.org/")

(synopsis

"Open CASCADE Technology, libraries for 3D modeling and numerical simulation")

(description #f)

(license #f))

paul$ cat /data/paul/sourceCode/nixpkgs/pkgs/development/libraries/opencascade/oce.nix

{stdenv, fetchurl, mesa, tcl, tk, file, libXmu, cmake, libtool, qt4,

ftgl, freetype}:

stdenv.mkDerivation rec {

name = "opencascade-oce-0.16";

src = fetchurl {

url = https://github.com/tpaviot/oce/archive/OCE-0.16.tar.gz;

sha256 = "05bmg1cjz827bpq8s0hp96byirm4c3zc9vx26qz76kjsg8ry87w4";

};

buildInputs = [ mesa tcl tk file libXmu libtool qt4 ftgl freetype cmake ];

preConfigure = ''

cmakeFlags="$cmakeFlags -DOCE_INSTALL_PREFIX=$out"

'';

# https://bugs.freedesktop.org/show_bug.cgi?id=83631

NIX_CFLAGS_COMPILE = "-DGLX_GLXEXT_LEGACY";

enableParallelBuilding = true;

meta = {

description = "Open CASCADE Technology, libraries for 3D modeling and numerical simulation";

homepage = http://www.opencascade.org/;

maintainers = with stdenv.lib.maintainers; [viric];

platforms = with stdenv.lib.platforms; linux;

};

}

This is almost usable, except the version of the file oce.nix has changed since the dde259d commit. Also, it may be nix-instantiate does not terminate for many other packages in recent versions of nixpkgs.

Best,

Paul.