Accepting request 564009 from home:cyphar:restic

- Switch away from using build.go, and instead manually build with "go". This
  allows us to build with the older Go compilers present in Leap, as well as to
  build the binary as PIC and dynamic.
- Add generated man pages.
- In order to build with older Go compilers, add a patch.
  + restic-switch-to-pre-1.8-sort.Stable-API.patch

OBS-URL: https://build.opensuse.org/request/show/564009
OBS-URL: https://build.opensuse.org/package/show/Archiving/restic?expand=0&rev=2

restic.spec

@@ -14,37 +14,52 @@
 
 # Please submit bugfixes or comments via http://bugs.opensuse.org/
 #
+# nodebuginfo
+
+%define import_path github.com/restic/restic
 
 Name:           restic
 Version:        0.8.1
 Release:        0
 License:        BSD-2-Clause
 Summary:        Fast, secure, efficient backup program
-Url:            https://restic.github.io/
-Group:          Productivity/Backup
+Url:            https://restic.net/
+Group:          Productivity/Archiving/Backup
 Source0:        https://github.com/restic/%{name}/releases/download/v%{version}/%{name}-%{version}.tar.gz
 Source1:        https://github.com/restic/%{name}/releases/download/v%{version}/%{name}-%{version}.tar.gz.asc
 Source2:        %{name}.keyring
-BuildRequires:  golang(API) = 1.8
+# PATCH-FIX-OPENSUSE: Revert to using pre-1.8 Go APIs so we can build on Leap 42.x.
+Patch1:         restic-switch-to-pre-1.8-sort.Stable-API.patch
+BuildRequires:  golang(API) >= 1.6
 BuildRequires:  golang-packaging
-BuildRequires:  python-Sphinx
 
 %description
 restic is a backup program that is fast, efficient and secure.
 
 %prep
 %setup -q
+%patch1 -p1
 
 %build
-make %{?_smp_mflags}
-make -C doc
+# Set up GOPATH.
+export GOPATH="$GOPATH:$HOME/go"
+mkdir -p $HOME/go/src/%{import_path}
+cp -rT $PWD $HOME/go/src/%{import_path}
+
+# Build restic. We don't use build.go because it builds statically and also has
+# weird golang version requirements for no good reason.
+go build -o %{name} -buildmode=pie \
+	-ldflags "-s -w -X main.version=%{version}" \
+	%{import_path}/cmd/restic
 
 %install
-install -D -m 0755 restic %{buildroot}%{_bindir}/restic
+install -D -m0755 %{name} %{buildroot}%{_bindir}/%{name}
+install -d %{buildroot}%{_mandir}/man1
+./%{name} generate --man %{buildroot}%{_mandir}/man1
 
 %files
 %defattr(-,root,root)
 %doc *.md *.rst LICENSE
 %doc doc/
 %{_bindir}/restic
-
+%{_mandir}/man1/restic*.1*