[bug#37617] [PATCH 0/6] Add weasyprint and dependencies.

[bug#37617] [PATCH 0/6] Add weasyprint and dependencies.

[Hartmut Goebel]

weasyprint is a document factory for creating PDF files from HTML.

Tested along these lines:

./pre-inst-env guix environment --pure -C --ad-hoc \
    weasyprint python-pytest
cd /gnu/store/*-weasyprint-50/lib/python*/site-*/weasy*
export PYTHONPATH=$(echo /gnu/store/*-profile*/lib/python*/site-*/)
pytest tests/ -k 'not test_flex_column_wrap_reverse and not test_http'

test_flex_column_wrap_reverse is deselected in the package description,
test_http has to be deselected since network is missing in the container.


Hartmut Goebel (6):
  gnu: Add python-pytest-isort.
  gnu: Add python-tinycss2.
  gnu: Add python-cssselect2.
  gnu: Add python-cairosvg.
  gnu: Add python-pyphen.
  gnu: Add weasyprint.

 gnu/packages/pdf.scm          | 81 +++++++++++++++++++++++++++++++++++
 gnu/packages/python-check.scm | 31 ++++++++++++++
 gnu/packages/python-web.scm   | 69 ++++++++++++++++++++++++++++-
 gnu/packages/python-xyz.scm   | 54 +++++++++++++++++++++++
 4 files changed, 234 insertions(+), 1 deletion(-)

-- 
2.21.0

[bug#37617] [PATCH 1/6] gnu: Add python-pytest-isort.

[Hartmut Goebel]

* gnu/packages/python-check.scm (python-pytest-isort): New variable.
---
 gnu/packages/python-check.scm | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/gnu/packages/python-check.scm b/gnu/packages/python-check.scm
index b8aaef9b77..362f548c02 100644
--- a/gnu/packages/python-check.scm
+++ b/gnu/packages/python-check.scm
@@ -3,6 +3,7 @@
 ;;; Copyright © 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2019 Maxim Cournoyer <maxim.cournoyer@gmail.com>
+;;; Copyright © 2019 Hartmut Goebel <h.goebel@crazy-compilers.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -153,6 +154,36 @@ of the project to ensure it renders properly.")
 compliance.")
     (license license:bsd-3)))
 
+(define-public python-pytest-isort
+  (package
+    (name "python-pytest-isort")
+    (version "0.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "pytest-isort" version))
+       (sha256
+        (base32 "06myn5hhxs5yp8dqr1yjsgcnnxnsrvsqannm00bvaw0qml6ydzjb"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (replace 'check
+           (lambda _
+             (setenv "PYTHONPATH"
+                     (string-append (getcwd) ":"
+                                    (getenv "PYTHONPATH")))
+             (invoke "pytest"))))))
+    (propagated-inputs
+     `(("python-isort" ,python-isort)
+       ("python-pytest" ,python-pytest)))
+    (home-page "https://github.com/moccu/pytest-isort/")
+    (synopsis "Pytest plugin to check import ordering using isort")
+    (description
+     "This package provides a pytest plugin to check import ordering using
+isort.")
+    (license license:bsd-3)))
+
 (define-public python-pytest-shutil
   (package
     (name "python-pytest-shutil")
-- 
2.21.0

[bug#37617] [PATCH 2/6] gnu: Add python-tinycss2.

[Hartmut Goebel]

* gnu/packages/python-web.scm (python-tinycss2): New variable.
---
 gnu/packages/python-web.scm | 36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/python-web.scm b/gnu/packages/python-web.scm
index e37ae94e18..576b75175d 100644
--- a/gnu/packages/python-web.scm
+++ b/gnu/packages/python-web.scm
@@ -13,7 +13,7 @@
 ;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2015 Cyril Roelandt <tipecaml@gmail.com>
 ;;; Copyright © 2015, 2016, 2017, 2019 Leo Famulari <leo@famulari.name>
-;;; Copyright © 2016 Hartmut Goebel <h.goebel@crazy-compilers.com>
+;;; Copyright © 2016, 2019 Hartmut Goebel <h.goebel@crazy-compilers.com>
 ;;; Copyright © 2016, 2017, 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2015, 2017 Ben Woodcroft <donttrustben@gmail.com>
 ;;; Copyright © 2015, 2016 Christopher Allan Webber <cwebber@dustycloud.org>
@@ -62,6 +62,7 @@
   #:use-module (gnu packages libffi)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages python)
+  #:use-module (gnu packages python-check)
   #:use-module (gnu packages python-crypto)
   #:use-module (gnu packages python-xyz)
   #:use-module (gnu packages sphinx)
@@ -3275,3 +3276,36 @@ library to create slugs from unicode strings while keeping it DRY.")
     (description "Generate complex HTML+JS pages with Python")
     (license license:expat)))
 
+(define-public python-tinycss2
+  (package
+    (name "python-tinycss2")
+    (version "1.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "tinycss2" version))
+       (sha256
+        (base32 "1kw84y09lggji4krkc58jyhsfj31w8npwhznr7lf19d0zbix09v4"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (replace 'check
+           (lambda _ (invoke "pytest"))))))
+    (propagated-inputs
+     `(("python-webencodings" ,python-webencodings)))
+    (native-inputs
+     `(("python-pytest-flake8" ,python-pytest-flake8)
+       ("python-pytest-isort" ,python-pytest-isort)
+       ("python-pytest-runner" ,python-pytest-runner)))
+    (home-page "https://tinycss2.readthedocs.io/")
+    (synopsis "Low-level CSS parser for Python")
+    (description "@code{tinycss2} can parse strings, return Python objects
+representing tokens and blocks, and generate CSS strings corresponding to
+these objects.
+
+Based on the CSS Syntax Level 3 specification, @code{tinycss2} knows the
+grammar of CSS but doesn’t know specific rules, properties or values supported
+in various CSS modules.")
+    (license license:bsd-3)))
+
-- 
2.21.0

[bug#37617] [PATCH 3/6] gnu: Add python-cssselect2.

[Hartmut Goebel]

* gnu/packages/python-web.scm (python-cssselect2): New variable.
---
 gnu/packages/python-web.scm | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/gnu/packages/python-web.scm b/gnu/packages/python-web.scm
index 576b75175d..0946a298a9 100644
--- a/gnu/packages/python-web.scm
+++ b/gnu/packages/python-web.scm
@@ -3309,3 +3309,36 @@ grammar of CSS but doesn’t know specific rules, properties or values supported
 in various CSS modules.")
     (license license:bsd-3)))
 
+(define-public python-cssselect2
+  (package
+    (name "python-cssselect2")
+    (version "0.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "cssselect2" version))
+       (sha256
+        (base32 "0skymzb4ncrm2zdsy80f53vi0arf776lvbp51hzh4ayp1il5lj3h"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (replace 'check
+           (lambda _ (invoke "pytest"))))))
+    (propagated-inputs
+     `(("python-tinycss2" ,python-tinycss2)))
+    (native-inputs
+     `(("python-pytest-cov" ,python-pytest-cov)
+       ("python-pytest-flake8" ,python-pytest-flake8)
+       ("python-pytest-isort" ,python-pytest-isort)
+       ("python-pytest-runner" ,python-pytest-runner)))
+    (home-page "https://cssselect2.readthedocs.io/")
+    (synopsis "CSS selectors for Python ElementTree")
+    (description "@code{cssselect2} is a straightforward implementation of
+CSS3 Selectors for markup documents (HTML, XML, etc.) that can be read by
+ElementTree-like parsers (including cElementTree, lxml, html5lib, etc.).
+
+Unlike the Python package @code{cssselect}, it does not translate selectors to
+XPath and therefore does not have all the correctness corner cases that are
+hard or impossible to fix in cssselect.")
+    (license license:bsd-3)))
-- 
2.21.0

[bug#37617] [PATCH 4/6] gnu: Add python-cairosvg.

[Hartmut Goebel]

* gnu/packages/python-xyz.scm (python-cairosvg): New variable.
---
 gnu/packages/python-xyz.scm | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 413d68c258..abcd7e7408 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -16474,3 +16474,38 @@ It is the recommended replacement for Python's original
 @code{distro} also provides a command-line interface to output the platform
 information in various formats.")
     (license license:asl2.0)))
+
+(define-public python-cairosvg
+  (package
+    (name "python-cairosvg")
+    (version "2.4.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "CairoSVG" version))
+       (sha256
+        (base32 "1bb7irxbaxxb9ahm3z5wsx1q96mm5gzskc7b6q07h9ikcnb8yrjf"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (replace 'check
+           (lambda _ (invoke "pytest"))))))
+    (propagated-inputs
+     `(("python-cairocffi" ,python-cairocffi)
+       ("python-cssselect2" ,python-cssselect2)
+       ("python-defusedxml" ,python-defusedxml)
+       ("python-pillow" ,python-pillow)
+       ("python-tinycss2" ,python-tinycss2)))
+    (native-inputs
+     `(("python-pytest-flake8" ,python-pytest-flake8)
+       ("python-pytest-isort" ,python-pytest-isort)
+       ("python-pytest-runner" ,python-pytest-runner)))
+    (home-page "https://cairosvg.org/")
+    (synopsis "SVG to PDF/PS/PNG converter based on Cairo")
+    (description "CairoSVG is a SVG converter based on Cairo.  It can export
+SVG files to PDF, PostScript and PNG files.  The main part of CairoSVG is a
+SVG parser, trying to follow the SVG 1.1 recommendation from the W3C.  Once
+parsed, the result is drawn to a Cairo surface that can be exported to
+qvarious formats: PDF, PostScript, PNG and even SVG.")
+    (license license:lgpl3+)))
-- 
2.21.0

[bug#37617] [PATCH 5/6] gnu: Add python-pyphen.

[Hartmut Goebel]

* gnu/packages/python-xyz.scm (python-pyphen): New variable.
---
 gnu/packages/python-xyz.scm | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index abcd7e7408..c7ffecabbf 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -16509,3 +16509,22 @@ SVG parser, trying to follow the SVG 1.1 recommendation from the W3C.  Once
 parsed, the result is drawn to a Cairo surface that can be exported to
 qvarious formats: PDF, PostScript, PNG and even SVG.")
     (license license:lgpl3+)))
+
+(define-public python-pyphen
+  (package
+    (name "python-pyphen")
+    (version "0.9.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "Pyphen" version))
+       (sha256
+        (base32 "08c9y69ry9d6m4zalhnalg86lsp9v2j5n1ziw5vxfmiihx83lqrv"))))
+    (build-system python-build-system)
+    ;; TODO: Use the Guix system hyphenation packages hyphen-* rather than the
+    ;; embedded set provided by upstream - like Debian does.
+    (home-page "https://github.com/Kozea/Pyphen")
+    (synopsis "Pure Python module to hyphenate text")
+    (description "Pyphen is a pure Python module to hyphenate text using
+existing Hunspell hyphenation dictionaries.")
+    (license (list license:gpl2 license:lgpl2.1 license:mpl1.1))))
-- 
2.21.0

[bug#37617] [PATCH 6/6] gnu: Add weasyprint.

[Hartmut Goebel]

* gnu/packages/pdf.scm (weasyprint): New variable.
---
 gnu/packages/pdf.scm | 81 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)

diff --git a/gnu/packages/pdf.scm b/gnu/packages/pdf.scm
index 9c7cc0b7d2..e0310ac89e 100644
--- a/gnu/packages/pdf.scm
+++ b/gnu/packages/pdf.scm
@@ -15,6 +15,7 @@
 ;;; Copyright © 2017, 2018 Rene Saavedra <pacoon@protonmail.com>
 ;;; Copyright © 2017, 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2019 Alex Griffin <a@ajgrf.com>
+;;; Copyright © 2019 Hartmut Goebel <h.goebel@crazy-compilers.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -65,6 +66,7 @@
   #:use-module (gnu packages imagemagick)
   #:use-module (gnu packages javascript)
   #:use-module (gnu packages lesstif)
+  #:use-module (gnu packages libffi)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages lua)
   #:use-module (gnu packages pcre)
@@ -72,6 +74,8 @@
   #:use-module (gnu packages photo)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages python)
+  #:use-module (gnu packages python-check)
+  #:use-module (gnu packages python-web)
   #:use-module (gnu packages python-xyz)
   #:use-module (gnu packages qt)
   #:use-module (gnu packages sdl)
@@ -1158,3 +1162,80 @@ manipulating PDF documents from the command line.  It supports
 @item displaying the mapping between logical and physical page numbers
 @end itemize")
     (license license:bsd-3)))
+
+(define-public weasyprint
+  (package
+    (name "weasyprint")
+    (version "50")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "WeasyPrint" version))
+       (sha256
+        (base32 "0invs96zvmcr6wh5klj52jrcnr9qg150v9wpmbhcsf3vv1d1hbcw"))
+       (patches (search-patches "weasyprint-library-paths.patch"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'patch-library-paths
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let ((fontconfig (assoc-ref inputs "fontconfig"))
+                   (glib (assoc-ref inputs "glib"))
+                   (pango (assoc-ref inputs "pango"))
+                   (pangoft2 (assoc-ref inputs "pangoft2")))
+               (substitute* "weasyprint/fonts.py"
+                 (("@fontconfig@")
+                  (string-append fontconfig "/lib/libfontconfig.so"))
+                 (("@pangoft2@")
+                  (string-append pango "/lib/libpangoft2-1.0.so")))
+               (substitute* "weasyprint/text.py"
+                 (("@gobject@")
+                  (string-append glib "/lib/libgobject-2.0.so"))
+                 (("@pango@")
+                  (string-append pango "/lib/libpango-1.0.so"))
+                 (("@pangocairo@")
+                  (string-append pango "/lib/libpangocairo-1.0.so"))))))
+         (add-after 'unpack 'remove-pytest-options
+           (lambda _
+             (substitute* "setup.cfg"
+               ;; flake8 and isort syntax checks fail, which is not our
+               ;; business
+               (("addopts = --flake8 --isort") ""))))
+         (replace 'check
+           (lambda _
+             ;; run pytest, excluding one failing test
+             (invoke "pytest" "-k" "not test_flex_column_wrap_reverse"))))))
+    (inputs
+     `(("fontconfig" ,fontconfig)
+       ("glib" ,glib)
+       ("pango" ,pango)))
+    (propagated-inputs
+     `(("gdk-pixbuf" ,gdk-pixbuf)
+       ("python-cairocffi" ,python-cairocffi)
+       ("python-cairosvg" ,python-cairosvg)
+       ("python-cffi" ,python-cffi)
+       ("python-cssselect2" ,python-cssselect2)
+       ("python-html5lib" ,python-html5lib)
+       ("python-pyphen" ,python-pyphen)
+       ("python-tinycss2" ,python-tinycss2)))
+    (native-inputs
+     `(("python-pytest-cov" ,python-pytest-cov)
+       ("python-pytest-runner" ,python-pytest-runner)))
+    (home-page "https://weasyprint.org/")
+    (synopsis "Document factory for creating PDF files from HTML")
+    (description "WeasyPrint helps web developers to create PDF documents.  It
+turns simple HTML pages into gorgeous statistical reports, invoices, tickets,
+etc.
+
+From a technical point of view, WeasyPrint is a visual rendering engine for
+HTML and CSS that can export to PDF and PNG.  It aims to support web standards
+for printing.
+
+It is based on various libraries but not on a full rendering engine like
+WebKit or Gecko.  The CSS layout engine is written in Python, designed for
+pagination, and meant to be easy to hack on.  Weasyprint can also be used as a
+python library.
+
+Keywords: html2pdf, htmltopdf")
+    (license license:bsd-3)))
-- 
2.21.0

bug#37617: Acknowledgement ([PATCH 0/6] Add weasyprint and dependencies.)

[Hartmut Goebel]

Commited as 73f0ed8dbfde97341716fd8b156907e4ef800873

-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | h.goebel@crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |