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| -rw-r--r-- | gnu/packages/python-xyz.scm | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm index 6360dc8f35..5fafcbc79d 100644 --- a/gnu/packages/python-xyz.scm +++ b/gnu/packages/python-xyz.scm @@ -6055,6 +6055,61 @@ memoizing PEG/Packrat parser in Python.") (define-public python2-grako (package-with-python2 python-grako)) +(define-public python-grandalf + (package + (name "python-grandalf") + (version "0.7") + (source + (origin + ;; There's no source tarball on PyPI. + (method git-fetch) + (uri (git-reference + (url "https://github.com/bdcht/grandalf") + (commit (string-append "v" version)))) + (file-name (git-file-name name version)) + (sha256 + (base32 + "03p8w8ljpb87qbyldm3s6b7qi30hfcn43h33iwlgqcf31fjsyr4g")))) + (build-system python-build-system) + (arguments + '(#:phases + (modify-phases %standard-phases + (replace 'check + (lambda _ + (invoke "python" "setup.py" "pytest")))))) + (native-inputs + `(("python-pytest" ,python-pytest) + ("python-pytest-runner" ,python-pytest-runner))) + (propagated-inputs + `(("python-numpy" ,python-numpy) + ("python-ply" ,python-ply))) + (home-page "https://github.com/bdcht/grandalf") + (synopsis "Graph and drawing algorithms framework") + (description + "Grandalf is a Python package made for experimentations with graphs +drawing algorithms. It is written in pure Python, and currently implements +two layouts: the Sugiyama hierarchical layout and the force-driven or energy +minimization approach. While not as fast or featured as graphviz or other +libraries like OGDF (C++), it provides a way to walk and draw graphs no larger +than thousands of nodes, while keeping the source code simple enough to tweak +and hack any part of it for experimental purpose. With a total of about 1500 +lines of Python, the code involved in drawing the Sugiyama (dot) layout fits +in less than 600 lines. The energy minimization approach is comprised of only +250 lines! + +Grandalf does only 2 not-so-simple things: +@itemize +@item computing the nodes (x,y) coordinates (based on provided nodes +dimensions, and a chosen layout) +@item routing the edges with lines or nurbs +@end itemize + +It doesn’t depend on any GTK/Qt/whatever graphics toolkit. This means that it +will help you find where to draw things like nodes and edges, but it’s up to +you to actually draw things with your favorite toolkit.") + ;; The user can choose either license. + (license (list license:gpl2 license:epl1.0)))) + (define-public python-gridmap (package (name "python-gridmap") |