Tuesday, 3 May 2016

Packaging python scripts into RPM's

Firstly install the relevent dependancies:

sudo dnf install rpm-build rpmdevtools

cd to a directory within your home folder e.g.:

cd ~/packages

and then run 'rpmdev-setuptree':

rpmdev-setuptree

The above will generate the folder tree structure for our rpm creation.

Proceed by checking the .rpmmacros file is correct:

cat ~/.rpmmacros

*Note* The "_topdir" variable in the '.rpmmacros' file defines the root path - e.g. if you wanted to deploy the nano utility we might put it in $_topdir/usr/bin.

We should bundle our sources up:

tar czvf myscript_0.1.tar.gz myscript/

and place it in the 'SOURCES' folder:

mv myscript_0.1.tar.gz /home/limited/packages/myscript/SOURCES

We should now create our 'spec' file - which contains the meet of the configuration, defining dependencies, build instructions and so on:

vi ~/packages/myscript/SPECS/myscript.spec

An example .spec file is as follows:

Name: pywinusb
Version: 1
Release: 0
Summary: Allows you to install Windows on a USB drive.
Source0: pywinusb_0.1.tar.gz
License: GPL
BuildArch: noarch
BuildRoot: %{_tmppath}/%{name}-buildroot

%description
Allows you to install Windows on a USB drive.

%prep

%setup -q

%build

%install
mkdir -p $RPM_BUILD_ROOT/usr/share/pywinusb/bin
install -m 0755 pywinusb.py $RPM_BUILD_ROOT/usr/share/pywinusb/bin/pywinusb

%clean
rm -rf $RPM_BUILD_ROOT

%post
ln -sf /usr/share/pywinusb/bin/pywinusb /usr/bin/pywinusb
echo pywinusb has been installed successfully!

%files

%dir /usr/share/pywinusb/bin
/usr/share/pywinusb/bin/pywinusb

Finally we can build the rpm with:

cd ~/rpmbuild
rpmbuild -ba SPECS/myscript.spec

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