# There are multiple Python 3 versions packaged, but only one can be the "main" version

# That means that it owns the "python3" namespace:

#     - python3 package name

#     - /usr/bin/python3 command

#     - python3-foo packages are meant for this version

# Other versions of Python 3 always contain the version in the namespace:

#     - python3.XX package name

#     - /usr/bin/python3.XX command

#     - python3.XX-foo packages (if allowed)

#

# Python spec files use the version defined here to determine defaults for the

# %%py_provides and %%python_provide macros, as well as for the "pythonname" generator that

# provides python3-foo for python3.XX-foo and vice versa for the default "main" version.

# E.g. in Fedora 33, python3.9-foo will provide python3-foo,

#                    python3-foo will provide python3.9-foo.

#

# There are two macros:

#

# This always contains the major.minor version (with dots), default for %%python3_version.

%__default_python3_version 3.9

#

# The pkgname version that determines the alternative provide name (e.g. python3.9-foo),

# set to the same as above, but historically hasn't included the dot.

# This is left intentionally a separate macro, in case the naming convention ever changes.

%__default_python3_pkgversion %__default_python3_version

# python3_pkgversion specifies the version of Python 3 in the distro.

# For Fedora, this is usually just "3".

# It can be a specific version distro-wide (e.g. "36" in EPEL7).

# Alternatively, it can be overridden in spec (e.g. to "3.8") when building for alternate Python stacks.

%python3_pkgversion 3

# Define the Python interpreter paths in the SRPM macros so that

# - they can be used in Build/Requires

# - they can be used in non-Python packages where requiring pythonX-devel would

#   be an overkill

# use the underscored macros to redefine the behavior of %%python3_version etc.

%__python2 /usr/bin/python2

%__python3 /usr/bin/python%{python3_pkgversion}

# use the non-underscored macros to refer to Python in spec, etc.

%python2 %__python2

%python3 %__python3

# See https://fedoraproject.org/wiki/Changes/PythonMacroError

%__python %{error:attempt to use unversioned python, define %%__python to %{__python2} or %{__python3} explicitly}

# Users can use %%python only if they redefined %%__python (e.g. to %%__python3)

%python %__python

# Define where Python wheels will be stored and the prefix of -wheel packages

# - In Fedora we want wheel subpackages named e.g. `python-pip-wheel` that

#   install packages into `/usr/share/python-wheels`. Both names are not

#   versioned, because they're used by all Python 3 stacks.

# - In RHEL we want wheel packages named e.g. `python3-pip-wheel` and

#   `python3.11-pip-wheel` that install packages into similarly versioned

#   locations. We want each Python stack in RHEL to have their own wheels,

#   because the main python3 wheels (which we can't upgrade) will likely be

#   quite old by the time we're adding new alternate Python stacks.

# - In ELN we want to follow Fedora, because builds for ELN and Fedora rawhide

#   need to be interoperable.

%python_wheel_pkg_prefix python%{?rhel:%{!?eln:%{python3_pkgversion}}}

%python_wheel_dir %{_datadir}/%{python_wheel_pkg_prefix}-wheels

# === Macros for Build/Requires tags using Python dist tags ===

# - https://fedoraproject.org/wiki/Changes/Automatic_Provides_for_Python_RPM_Packages

# - These macros need to be in macros.python-srpm, because BuildRequires tags

#   get rendered as runtime requires into the metadata of SRPMs.

# Converts Python dist name to a canonical format

%py_dist_name() %{lua:\

        name = rpm.expand("%{?1:%{1}}");\

        canonical = string.gsub(string.lower(name), "[^%w%[%]]+", "-");\

        print(canonical);\

}

# Creates Python 2 dist tag(s) after converting names to canonical format

#   Needs to first put all arguments into a list, because invoking a different

#   macro (%%py_dist_name) overwrites them

%py2_dist() %{lua:\

        args = {}\

        arg = 1\

        while (true) do\

                name = rpm.expand("%{?" .. arg .. ":%{" .. arg .. "}}");\

                if (name == nil or name == '') then\

                        break\

                end\

                args[arg] = name\

                arg = arg + 1\

        end\

        for arg, name in ipairs(args) do\

                canonical = rpm.expand("%py_dist_name " .. name);\

                print("python2dist(" .. canonical .. ") ");\

        end\

}

# Creates Python 3 dist tag(s) after converting names to canonical format

#   Needs to first put all arguments into a list, because invoking a different

#   macro (%%py_dist_name) overwrites them

%py3_dist() %{lua:\

        python3_pkgversion = rpm.expand("%python3_pkgversion");\

        args = {}\

        arg = 1\

        while (true) do\

                name = rpm.expand("%{?" .. arg .. ":%{" .. arg .. "}}");\

                if (name == nil or name == '') then\

                        break\

                end\

                args[arg] = name\

                arg = arg + 1\

        end\

        for arg, name in ipairs(args) do\

                canonical = rpm.expand("%py_dist_name " .. name);\

                print("python" .. python3_pkgversion .. "dist(" .. canonical .. ") ");\

        end\

}

# Macro to replace overly complicated references to PyPI source files.

# Expands to the pythonhosted URL for a package

# Accepts zero to three arguments:

# 1:  The PyPI project name, defaulting to %%srcname if it is defined, then

#     %%pypi_name if it is defined, then just %%name.

# 2:  The PYPI version, defaulting to %%version with tildes stripped.

# 3:  The file extension, defaulting to "tar.gz".  (A period will be added

#     automatically.)

# Requires %%__pypi_url and %%__pypi_default_extension to be defined.

%__pypi_url https://files.pythonhosted.org/packages/source/

%__pypi_default_extension tar.gz

%pypi_source() %{lua:

    local src = rpm.expand('%1')

    local ver = rpm.expand('%2')

    local ext = rpm.expand('%3')

    local url = rpm.expand('%__pypi_url')

\

    -- If no first argument, try %srcname, then %pypi_name, then %name

    -- Note that rpm leaves macros unchanged if they are not defined.

    if src == '%1' then

        src = rpm.expand('%srcname')

    end

    if src == '%srcname' then

        src = rpm.expand('%pypi_name')

    end

    if src == '%pypi_name' then

        src = rpm.expand('%name')

    end

\

    -- If no second argument, use %version

    if ver == '%2' then

        ver = rpm.expand('%version'):gsub('~', '')

    end

\

    -- If no third argument, use the preset default extension

    if ext == '%3' then

        ext = rpm.expand('%__pypi_default_extension')

    end

\

    local first = string.sub(src, 1, 1)

\

    print(url .. first .. '/' .. src .. '/' .. src .. '-' .. ver .. '.' .. ext)

}

%py_provides() %{lua:

    local python = require 'fedora.srpm.python'

    local rhel = rpm.expand('%{?rhel}')

    local name = rpm.expand('%1')

    if name == '%1' then

        rpm.expand('%{error:%%py_provides requires at least 1 argument, the name to provide}')

    end

    local evr = rpm.expand('%2')

    if evr == '%2' then

        evr = rpm.expand('%{?epoch:%{epoch}:}%{version}-%{release}')

    end

    print('Provides: ' .. name .. ' = ' .. evr .. '\\n')

    local provides = python.python_altprovides(name, evr)

    for i, provide in ipairs(provides) do

        print('Provides: ' .. provide .. '\\n')

    end

    -- We only generate these Obsoletes on CentOS/RHEL to provide clean upgrade

    -- path, e.g. python3-foo obsoletes python39-foo from previous RHEL.

    -- In Fedora this is not needed as we don't ship ecosystem packages

    -- for alternative Python interpreters.

    if rhel ~= '' then

        -- Create Obsoletes only if the name does not end in a parenthesis,

        -- as Obsoletes can't include parentheses.

        -- This most commonly happens when the name contains an isa.

        if (string.sub(name, "-1") ~= ")") then

            local obsoletes = python.python_altobsoletes(name, evr)

            for i, obsolete in ipairs(obsoletes) do

                print('Obsoletes: ' .. obsolete .. '\\n')

            end

        end

    end

}

%python_extras_subpkg(n:i:f:F) %{expand:%{lua:

    local option_n = '-n (name of the base package)'

    local option_i = '-i (buildroot path to metadata)'

    local option_f = '-f (builddir path to a filelist)'

    local option_F = '-F (skip %%files section)'

    local value_n = rpm.expand('%{-n*}')

    local value_i = rpm.expand('%{-i*}')

    local value_f = rpm.expand('%{-f*}')

    local value_F = rpm.expand('%{-F}')

    local args = rpm.expand('%{*}')

    if value_n == '' then

        rpm.expand('%{error:%%%0: missing option ' .. option_n .. '}')

    end

    if value_i == '' and value_f == '' and value_F == '' then

        rpm.expand('%{error:%%%0: missing option ' .. option_i .. ' or ' .. option_f .. ' or ' .. option_F .. '}')

    end

    if value_i ~= '' and value_f ~= '' then

        rpm.expand('%{error:%%%0: simultaneous ' .. option_i .. ' and ' .. option_f .. ' options are not possible}')

    end

    if value_i ~= '' and value_F ~= '' then

        rpm.expand('%{error:%%%0: simultaneous ' .. option_i .. ' and ' .. option_F .. ' options are not possible}')

    end

    if value_f ~= '' and value_F ~= '' then

        rpm.expand('%{error:%%%0: simultaneous ' .. option_f .. ' and ' .. option_F .. ' options are not possible}')

    end

    if args == '' then

        rpm.expand('%{error:%%%0 requires at least one argument with "extras" name}')

    end

    local requires = 'Requires: ' .. value_n .. ' = %{?epoch:%{epoch}:}%{version}-%{release}'

    for extras in args:gmatch('[^%s,]+') do

        local rpmname = value_n .. '+' .. extras

        local pkgdef = '%package -n ' .. rpmname

        local summary = 'Summary: Metapackage for ' .. value_n .. ': ' .. extras .. ' extras'

        local description = '%description -n ' .. rpmname .. '\\\n'

        local current_line = 'This is a metapackage bringing in'

        for _, word in ipairs({extras, 'extras', 'requires', 'for', value_n .. '.'}) do

          local line = current_line .. ' ' .. word

          if line:len() > 79 then

            description = description .. current_line .. '\\\n'

            current_line = word

          else

            current_line = line

          end

        end

        description = description .. current_line .. '\\\n' ..

                      'It makes sure the dependencies are installed.\\\n'

        local files = ''

        if value_i ~= '' then

            files = '%files -n ' .. rpmname .. '\\\n' .. '%ghost ' .. value_i

        elseif value_f ~= '' then

            files = '%files -n ' .. rpmname .. ' -f ' .. value_f

        end

        for i, line in ipairs({pkgdef, summary, requires, description, files, ''}) do

            print(line .. '\\\n')

        end

    end

}}