sasview: init at 4.1.2

Sasview is a data fitting and analysis package for small angle
scattering data.  More information can be found at
https://www.sasview.org.

There is some unfortunate cruft to this commit.  SasView uses the
xhtml2pdf python package, which has a specific version of html5lib as
a dependency.  This module manually loads that version into sasview.
I haven't made xhtml2pdf available as its own package due to these
circumstances.

pkgs/applications/science/misc/sasview/default.nix

@@ -0,0 +1,51 @@
+{lib, fetchgit, gcc, python}:
+
+let
+  html5 = import ./myHtml5.nix {inherit python;};
+  xhtml2pdf = import ./xhtml2pdf.nix {inherit python html5;};
+in
+
+python.pkgs.buildPythonApplication rec {
+  name = "sasview-${version}";
+  version = "4.1.2";
+
+  propagatedBuildInputs = with python.pkgs; [
+    bumps
+    gcc
+    h5py
+    html5
+    libxslt
+    lxml
+    matplotlib
+    numpy
+    pyparsing
+    periodictable
+    pillow
+    pylint
+    pyopencl
+    pytest
+    reportlab
+    sasmodels
+    scipy
+    six
+    sphinx
+    unittest-xml-reporting
+    wxPython
+    xhtml2pdf];
+
+  src = fetchgit {
+    url = "https://github.com/SasView/sasview.git";
+    rev = "v${version}";
+    sha256 ="05la54wwzzlkhmj8vkr0bvzagyib6z6mgwqbddzjs5y1wd48vpcx";
+  };
+
+  patches = [./pyparsing-fix.patch ./local_config.patch];
+  sandbox = true;
+
+  meta = {
+    homepage = https://www.sasview.org;
+    description = "Fitting and data analysis for small angle scattering data";
+    maintainers = with lib.maintainers; [ rprospero ];
+    license = lib.licenses.bsd3;
+  };
+}

pkgs/applications/science/misc/sasview/local_config.patch

@@ -0,0 +1,10 @@
+--- a/src/sas/_config.py
++++ b/src/sas/_config.py
+@@ -70,2 +70,2 @@
+-        logger.critical("Error loading %s: %s", path, exc)
+-        sys.exit()
++        import sas.sasview.local_config
++        return sas.sasview.local_config
+-- 
+2.15.0
+

pkgs/applications/science/misc/sasview/myHtml5.nix

@@ -0,0 +1,20 @@
+{python}:
+
+python.pkgs.buildPythonPackage (rec{
+  buildInputs = with python.pkgs; [ flake8 pytest pytest-expect mock ];
+  propagatedBuildInputs = with python.pkgs; [
+    six webencodings
+  ];
+
+  checkPhase = ''
+    py.test
+  '';
+  pname = "html5lib";
+  name = "html5lib-${version}";
+  version = "1.0b10";
+  src = python.pkgs.fetchPypi {
+    pname = "html5lib";
+    inherit version;
+    sha256 = "1yd068a5c00wd0ajq0hqimv7fd82lhrw0w3s01vbhy9bbd6xapqd";
+  };
+})

pkgs/applications/science/misc/sasview/pyparsing-fix.patch

@@ -0,0 +1,8 @@
+--- a/setup.py
++++ b/setup.py
+@@ -5,1 +5,1 @@
+-    'bumps>=0.7.5.9', 'periodictable>=1.5.0', 'pyparsing<2.0.0',
++    'bumps>=0.7.5.9', 'periodictable>=1.5.0',
+-- 
+2.15.0
+

pkgs/applications/science/misc/sasview/xhtml2pdf.nix

@@ -0,0 +1,15 @@
+{python, html5}:
+
+python.pkgs.buildPythonPackage rec {
+  name = "${pname}-${version}";
+  pname = "xhtml2pdf";
+  version = "0.2.1";
+
+  buildInputs = [html5];
+  propagatedBuildInputs = with python.pkgs; [httplib2 pillow pypdf2 reportlab html5];
+
+  src = python.pkgs.fetchPypi {
+    inherit pname version;
+    sha256 = "1n9r8zdk9gc2x539fq60bhszmd421ipj8g78zmsn3njvma1az9k1";
+  };
+}

pkgs/top-level/all-packages.nix

@@ -4633,6 +4633,8 @@ with pkgs;
 
   samplicator = callPackage ../tools/networking/samplicator { };
 
+  sasview = callPackage ../applications/science/misc/sasview {};
+
   scanbd = callPackage ../tools/graphics/scanbd { };
 
   screen = callPackage ../tools/misc/screen {