ligo-gracedb.spec: use python-srpm-macros

easy to resolve dependencies when building a src.rpm

ligo-gracedb.spec

@@ -15,12 +15,18 @@ Vendor:    Tanner Prestegard <tanner.prestegard@ligo.org>, Alexander Pace <alexa
 Url:       http://www.lsc-group.phys.uwm.edu/daswg/gracedb.html
 
 BuildArch: noarch
-BuildRequires: python
-BuildRequires: python%{python3_version_nodots}
+
+# srpm dependencies:
+BuildRequires: python-srpm-macros
+# build macro dependencies:
 BuildRequires: python2-rpm-macros
 BuildRequires: python3-rpm-macros
+
+# build dependencies:
+BuildRequires: python
+BuildRequires: python%{python3_pkgversion}
 BuildRequires: python-setuptools
-BuildRequires: python%{python3_version_nodots}-setuptools
+BuildRequires: python%{python3_pkgversion}-setuptools
 
 %description
 The gravitational-wave candidate event database (GraceDB) is a prototype
@@ -49,16 +55,16 @@ client tool is provided to submit a candidate event to the database.
 
 # -- python-3X-ligo-gracedb
 
-%package -n python%{python3_version_nodots}-%{name}
+%package -n python%{python3_pkgversion}-%{name}
 Summary:  %{summary}
-Requires: python%{python3_version_nodots}-six
-Requires: python%{python3_version_nodots}-ligo-common
-Requires: python%{python3_version_nodots}-future
-Requires: python%{python3_version_nodots}-cryptography
+Requires: python%{python3_pkgversion}-six
+Requires: python%{python3_pkgversion}-ligo-common
+Requires: python%{python3_pkgversion}-future
+Requires: python%{python3_pkgversion}-cryptography
 
-%{?python_provide:%python_provide python%{python3_version_nodots}-%{name}}
+%{?python_provide:%python_provide python%{python3_pkgversion}-%{name}}
 
-%description -n python%{python3_version_nodots}-%{name}
+%description -n python%{python3_pkgversion}-%{name}
 The gravitational-wave candidate event database (GraceDB) is a prototype
 system to organize candidate events from gravitational-wave searches and
 to provide an environment to record information about follow-ups. A simple
@@ -88,7 +94,7 @@ rm -rf $RPM_BUILD_ROOT
 %{_bindir}/gracedb_legacy
 %{python2_sitelib}/*
 
-%files -n python%{python3_version_nodots}-%{name}
+%files -n python%{python3_pkgversion}-%{name}
 %license LICENSE
 %{python3_sitelib}/*