Help building texmacs

texmacs/PKGBUILD

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+pkgname=texmacs
+pkgver=1.99.2
+pkgrel=1
+pkgdesc="WYSIWYG Qt4 editor and graphical frontend to various CASes"
+arch=('x86_64')
+url='http://texmacs.org/'
+screenshot="http://www.texmacs.org/tmweb/images/texmacs-1.png"
+license=('GPL3')
+depends=('qt' 'texlive-core' 'guile1.8' 'cairo' 'freetype2' 'imlib2'
+         'perl' 'python2' 'libxext'
+         'desktop-file-utils' 'shared-mime-info')
+makedepends=('ghostscript')
+optdepends=('gawk: conversion of some files'
+            'transfig: convert images using fig2ps')
+provides=('texmacs')
+conflicts=('texmacs-qt')
+install=${pkgname}.install
+options=('!emptydirs')
+source=("http://www.texmacs.org/Download/ftp/tmftp/source/TeXmacs-$pkgver-src.tar.gz"
+        'https://lists.gnu.org/archive/html/texmacs-dev/2010-09/png9oo9TJIjlY.png'
+        'texmacs.desktop')
+sha512sums=('e9d2dd0aab2e66470c4ae860e13b6fad2cc07913f14f7bca042c703d4d8b4a62fafafa711b81a0d8f8c125a3641b8bb5f38cd3adac74ec18895671423aa60be9'
+            'aae0c0a2c9f6f691ab694d3a6069ac0286153fe3aec6865c0bba6422f287e95cf18a26f810b5b87ad77944ea890f8839448059d095d7b22483d50e16d366966e'
+            '277353b9e612c2d958e621c317aff75615ddaaee3570357b492a2dcb656aec1dda42f4e65ea24c11ff37b74eaaf3ffe9a5776c964a9d5a2eb8cf157fe9348069')
+
+prepare() {
+    cd $srcdir/TeXmacs-$pkgver-src
+
+    sed -i 's/env python/env python2/' \
+	plugins/{mathematica/bin/realpath.py,python/bin/tm_python,sage/bin/tm_sage} \
+	TeXmacs/misc/inkscape_extension/texmacs_reedit.py
+    sed -i 's/"python"/"python2"/' plugins/python/progs/init-python.scm
+    sed -i '/^LDPATH/d' src/makefile.in
+    sed -i -e 's/guile /guile1.8 /g' \
+	-e 's/guile-config/guile-config1.8/g' \
+	configure
+	
+  # Don't generate icon-cache and mime-database (namcap tells that they should not be in a package)
+  sed -i '/update-mime-database/d' Makefile.in
+  sed -i '/gtk-update-icon-cache/d' Makefile.in
+  sed -i '\/icons\/gnome 2>\/dev\/null/d' Makefile.in
+  
+}
+  
+build() {  
+  cd "${srcdir}/TeXmacs-${pkgver}-src"
+  
+  export QMAKE=qmake
+  export MOC=moc-qt4
+  export UIC=uic-qt4
+    ./configure \
+	--prefix=/usr \
+	--enable-pdf-renderer \
+	--enable-optimize \
+	--with-freetype \
+	--with-imlib2 \
+	--enable-guile2=no \
+	--with-qt
+    make || return 1
+}
+
+package() {
+    cd $srcdir/TeXmacs-$pkgver-src
+    make DESTDIR=${pkgdir} install
+    
+    # fix fig2ps script
+    sed -i 's|${prefix}|/usr|' "${pkgdir}/usr/bin/fig2ps"
+
+}

texmacs/texmacs.desktop

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+[Desktop Entry]
+Name=TeXmacs
+GenericName=GNU TeXmacs Editor
+GenericName[es]=Editor GNU TeXmacs
+Comment=A structured wysiwyg scientific text editor and graphical frontend to various CASes
+Comment[es]=GNU TeXmacs es un editor de texto cientifico libre e interface de programas CAS
+Exec=texmacs
+Icon=texmacs
+Terminal=false
+Type=Application
+Categories=Science;Math;

texmacs/texmacs.install

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+post_install() {
+  update-desktop-database -q
+  update-mime-database /usr/share/mime
+  gtk-update-icon-cache --force -t -q /usr/share/icons/gnome
+}
+
+post_upgrade() {
+  post_install
+}
+
+post_remove() {
+  post_install
+}