Fixes: #45

build: use direct host build by default

Closes #44

See merge request !37

archive: drop atool requirement

Closes #42

See merge request !36

After some experimentation in the wild, original direct host build
proved to be a better default after all.

Fixes: #44

Use standard shutil.unpack_archive which has a limited archive support
but can be extended to support arbitrary archive formats as needed.

Fixes: #42

various fixes for issues encountered during BIRD packaging

See merge request !35

apkg can now be easily started without script:

    python3 -m apkg build

small fixes found during BIRD packaging

See merge request !34

Use default_render_filter() function to select which files to
render and which to copy only.

This should eventually evolve into full-featured filters through config
but for now keep it simple.

Building packages from archives should work again:

    apkg build -a path/to/archive.tgz

Also make input parsing helper more resiliant.

distro module was removed from python standard library in Ubuntu Xenial
but standalone python3-distro package isn't available.

Install from PyPI instead.

refactor exceptions

Closes #35

See merge request !32

Fixes: #35

This results in

    raise ex.ErrorName(args)

instead of needlessly long

    raise exception.ErrorName(args)

Group similar exceptions and reassign exit codes
while leaving space for potential future additions.

refactor: get rid of compat.py35path

Closes #36

See merge request !33

shutil and os modules in python 3.5 doesn't accept pathlib.Path (yet).

compat.py35path() wrapper was used to mark code which requires extra
str() conversion on Python <= 3.5.

Introduce new apkg.util.shutil35 wrapper module for selected shutil and
os functions in order to address this without polluting code with
redundant py35path/str conversions.

apkg.compat was removed in favor of new shutil35 which can be easily
removed in the future once Python 3.5 support is dropped.

Fixes: #36

get rid of py35path and "import os" in the process.

Red the Docs integration

See merge request !31

A subset of requirements is needed because command help texts are parsed
from python docstrings.

refactor: unified input files handling

Closes #31 and #30

See merge request !30

All commands's CLI was refactored to use new consistent handling of
input files which allows selecting multiple input files as opposed to
single archive/srcpkg:

input files as arguments:

    apkg srcpkg -a foo.1.2.tgz foo.1.2.tgz.asc

input files listed in file(s) including stdin which allows piping:

    apkg make-archive | apkg srcpkg -aF - | apkg build -sF -

Fixes: #30
Fixes: #31

pkgstyle.rpm: support openSUSE

See merge request !29

* support openSUSE's zypper package manager
* provide manual parsing of BuildRequires from .src.rpm
  because SUSE doesn't have builddep command (╯°□°）╯︵ ┻━┻

Quality of Life changes for build, build-dep and cli

Closes #29 and #27

See merge request !28

It's dangerous for new users to use direct build by default as it
modifies host system and requires build deps to be installed
system-wide. This is useful especially in VMs and containers (CI).

Isolated build is safer so make it a default with -H/--host-build
option to enable direct host build replacing --isolated option.

Adjust arch pkgstyle to work with new default CI invocation even though
build deps installation and direct host build aren't supported on arch:

    apkg build -Hi

apkg will print warnings for -H/--host-build (not supported on arch in
general) and -i/--install-deps (not needed on arch) but it's going to
work regardless.

    apkg build-dep

on arch will result in DistroNotSupported error (exit code 44) as it
should.

Fixes: #27

apkg is using dash-separated-command-names for the sake of readability
but both dnf and apt have builddep command without the dash.

Add builddep alias for build-dep so that everyone's happy :)

Related: #29

print nice warning instead of showing stack trace when invalid apkg
command was supplied.

Fixes: #29

code cleanup

See merge request !27

prospector aims at running multiple quality of code tools with
reasonable defaults.

I went through all 50 prospector warnings (those disabled in apkg
pylint/flake config are still shown by prospector) and reduced their
number to 21.

Remaining warnings are mostly about complexity, too many locals, etc.

advantages:

* no pylint warnings
* consistent invocation across codebase
* slightly faster as formatting is done on-demand

install: new command to install packages

Closes #19 and #26

See merge request !26

finish rpm package style

Closes #19

See merge request !25

new `apkg install` command was added using two new pkgstyle interface
functions for installing packages using native distro package manager:

* install_custom_packages() to install native package files
  (default)
* install_distro_packages() to install packages from distro repos
  (enabled with -D/--distro-deps option)

It's possible to override target distro using -d/--distro as usual.

Packages to install can be passed as command arguments or using -f
<file> including stdin support with -, i.e.:

    apkg build | apkg install -f -

-y/--yes option enables non-interactive mode.

Fixes: #26