py-whoosh: update to 2.7.4

- fix livecheck, use python.rootname
- install files in post-destroot

python/py-whoosh/Portfile

@@ -3,12 +3,10 @@
 PortSystem          1.0
 PortGroup           python 1.0
 
-set _name           Whoosh
-set _n              [string index ${_name} 0]
-
 name                py-whoosh
-version             2.5.7
-revision            1
+python.rootname     Whoosh
+version             2.7.4
+revision            0
 platforms           darwin
 supported_archs     noarch
 license             BSD
@@ -22,21 +20,25 @@ long_description    \
     Whoosh works can be extended or replaced to meet your needs exactly.
 
 homepage            https://bitbucket.org/mchaput/whoosh/wiki/Home
-master_sites        pypi:${_n}/${_name}
-distname            ${_name}-${version}
+master_sites        pypi:[string index ${python.rootname} 0]/${python.rootname}
+distname            ${python.rootname}-${version}
 
-checksums           md5     9d35a7498d5c7af8fe162f63719f4eeb \
-                    rmd160  e5bd168af8cc5cd601af9d3aff6c6cb85c38d61c \
-                    sha256  450d3b76c45dd26ceda101ebafee181c7ab377e8ea37ff5aaca1be79227f73fa
+checksums           rmd160  f60b9fe6277f4b9a7aa48e3c7df2d6fff6390a36 \
+                    sha256  7ca5633dbfa9e0e0fa400d3151a8a0c4bec53bd2ecedc0a67705b17565c31a83 \
+                    size    968741
 
 python.versions     27 35 36 37
 
 if {${name} ne ${subport}} {
-    depends_build   port:py${python.version}-setuptools
+    depends_build-append \
+                    port:py${python.version}-setuptools
+
+    post-destroot {
+        set docdir ${prefix}/share/doc/${subport}
+        xinstall -d ${destroot}${docdir}
+        xinstall -m 0644 -W ${worksrcpath} README.txt LICENSE.txt \
+            ${destroot}${docdir}
+    }
 
     livecheck.type  none
-} else {
-    livecheck.type  regex
-    livecheck.url   [lindex ${master_sites} 0]
-    livecheck.regex ">${_name}-(\\d+(\\.\\d+)+)\\${extract.suffix}<"
 }