py-eric-ide: new port, version 19.04

Looking at the commit history, upstream seems to intent to package the
software on PyPI as "eric-ide"; hence the choice for the name.

The software has its own install.py script that requires the non-default
setup in the Portfile for build/destroot phases and some patching to get
the App to work.

Closes: https://trac.macports.org/ticket/52865
Closes: https://trac.macports.org/ticket/56636
Closes: #3638

python/py-eric-ide/Portfile

@@ -0,0 +1,98 @@
+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:filetype=tcl:et:sw=4:ts=4:sts=4
+
+PortSystem          1.0
+PortGroup           python 1.0
+
+name                py-eric-ide
+set real_name       eric6
+version             19.04
+revision            0
+
+categories-append   devel
+platforms           darwin
+supported_archs     noarch
+license             GPL-3+
+maintainers         {reneeotten @reneeotten} openmaintainer
+
+description         Eric is a full featured Python and Ruby editor and IDE
+long_description    ${description}, written in python. It is based on the cross \
+                    platform Qt gui toolkit, integrating the highly flexible \
+                    Scintilla editor control. It is designed to be usable as \
+                    everdays' quick and dirty editor as well as being usable \
+                    as a professional project management tool integrating many \
+                    advanced features Python offers the professional coder.
+
+homepage            https://eric-ide.python-projects.org/index.html
+master_sites        sourceforge:project/eric-ide/${real_name}/stable/${version}
+distname            ${real_name}-${version}
+
+checksums           rmd160  cbb0b5dc96c9aefdaae2f029b881c9c044c8c325 \
+                    sha256  62b34c8cf152e7342a92ef0c76efe54ae78c611bc50293fcab072a180fafb4dc \
+                    size    17160668
+
+python.versions     27 37
+
+if {${name} ne ${subport}} {
+    variant qt5 conflicts qt4 description "Use Qt5 backend" {
+        PortGroup   qt5 1.0
+
+        depends_lib-append  \
+                    port:py${python.version}-pyqt5 \
+                    port:py${python.version}-pyqt5-webengine \
+                    port:py${python.version}-qscintilla-qt5
+
+        build.args-append --pyqt=5
+    }
+
+    variant qt4 conflicts qt5 description "Use Qt4 backend" {
+        PortGroup   qt4 1.0
+
+        depends_lib-append \
+                    port:py${python.version}-pyqt4 \
+                    port:py${python.version}-qscintilla-qt4
+
+        build.args-append --pyqt=4
+    }
+
+    if {![ variant_isset qt4 ]} {
+        default_variants +qt5
+    }
+
+    depends_lib-append \
+                    port:py${python.version}-cx_Freeze \
+                    port:py${python.version}-enchant \
+                    port:py${python.version}-pylint \
+                    port:py${python.version}-pysvn \
+                    port:py${python.version}-rope
+
+    patchfiles      patch-install.py.diff
+    post-patch {
+        reinplace "s|@@PYTHON_BIN_NAME@@|${python.bin}|g" ${worksrcpath}/install.py
+        reinplace "s|@@PYTHON_PKG_DIR@@|${python.pkgd}/${real_name}|g" ${worksrcpath}/install.py
+        if {[ variant_isset qt4 ]} {
+            reinplace "s|@@PYQT_VERSION@@|--pyqt4|g" ${worksrcpath}/install.py
+        } else {
+            reinplace "s|@@PYQT_VERSION@@|--pyqt5|g" ${worksrcpath}/install.py
+        }
+    }
+
+    build.cmd       ${python.bin} install.py
+    build.args      -b ${python.prefix}/bin \
+                    -i ${destroot} \
+                    -n ${destroot}/Applications/MacPorts \
+                    -m ${real_name}-${python.branch}.app
+    build.target
+
+    destroot { }
+
+    post-destroot {
+        set docdir ${prefix}/share/doc/${subport}
+        xinstall -d ${destroot}${docdir}
+        xinstall -m 0644 -W ${worksrcpath} changelog THANKS \
+            LICENSE.GPL3 ${destroot}${docdir}
+    }
+
+    livecheck.type  none
+} else {
+    livecheck.regex ${real_name}-(\[0-9.\]+)${extract.suffix}
+}

python/py-eric-ide/files/patch-install.py.diff

@@ -0,0 +1,39 @@
+--- install.py.orig	2019-04-26 22:19:54.000000000 -0400
++++ install.py	2019-04-26 22:21:34.000000000 -0400
+@@ -1191,11 +1191,13 @@
+     os.makedirs(dirs["exe"])
+     os.makedirs(dirs["icns"])
+
+-    if macPythonExe == defaultMacPythonExe:
+-        starter = os.path.join(dirs["exe"], "eric")
+-        os.symlink(macPythonExe, starter)
+-    else:
+-        starter = "python{0}".format(sys.version_info.major)
++##    if macPythonExe == defaultMacPythonExe:
++##        starter = os.path.join(dirs["exe"], "eric")
++##        os.symlink(macPythonExe, starter)
++##    else:
++##        starter = "python{0}".format(sys.version_info.major)
++    starter = "@@PYTHON_BIN_NAME@@"
++
+
+     wname = os.path.join(dirs["exe"], "eric6")
+
+@@ -1224,13 +1226,15 @@
+                 pathlist_n.append(path_)
+         pathLine = "PATH={0}\n".format(os.pathsep.join(pathlist_n))
+
++    pydir = "@@PYTHON_PKG_DIR@@"
++    pyqt_ver = "@@PYQT_VERSION@@"
+     # create the wrapper script
+     wrapper = ('''#!/bin/sh\n'''
+                '''\n'''
+                '''{0}'''
+                '''{1}'''
+-               '''exec "{2}" "{3}/{4}.py" "$@"\n'''
+-               .format(pathLine, dyldLine, starter, pydir, "eric6"))
++               '''exec "{2}" "{3}/{4}.py" "{5}" "$@"\n'''
++               .format(pathLine, dyldLine, starter, pydir, "eric6", pyqt_ver))
+     copyToFile(wname, wrapper)
+     os.chmod(wname, 0o755)
+