python-bottle fails to build with Python 3.14.0a1.

=================================== FAILURES ===================================
_____________________________ TestRequest.test_url _____________________________

self = <test.test_environ.TestRequest testMethod=test_url>

    def test_url(self):
        """ Environ: URL building """
        request = BaseRequest({'HTTP_HOST':'example.com'})
        self.assertEqual('http://example.com/', request.url)
        request = BaseRequest({'SERVER_NAME':'example.com'})
        self.assertEqual('http://example.com/', request.url)
        request = BaseRequest({'SERVER_NAME':'example.com', 'SERVER_PORT':'81'})
        self.assertEqual('http://example.com:81/', request.url)
        request = BaseRequest({'wsgi.url_scheme':'https', 'SERVER_NAME':'example.com'})
        self.assertEqual('https://example.com/', request.url)
        request = BaseRequest({'HTTP_HOST':'example.com', 'PATH_INFO':'/path',
                               'QUERY_STRING':'1=b&c=d', 'SCRIPT_NAME':'/sp'})
>       self.assertEqual('http://example.com/sp/path?1=b&c=d', request.url)
E       AssertionError: 'http://example.com/sp/path?1=b&c=d' != 'http://example.com/path?1=b&c=d'
E       - http://example.com/sp/path?1=b&c=d
E       ?                    ---
E       + http://example.com/path?1=b&c=d

test/test_environ.py:104: AssertionError
_______________________ TestRedirect.test_relative_path ________________________

self = <test.test_environ.TestRedirect testMethod=test_relative_path>
target = './test.html', result = 'http://127.0.0.1/foo/bar/test.html'
query = None, status = 303
args = {'PATH_INFO': '/bar/baz.html', 'SCRIPT_NAME': '/foo/'}
env = {'PATH_INFO': '/bar/baz.html', 'SCRIPT_NAME': '/foo/', 'SERVER_PROTOCOL': 'HTTP/1.1', 'bottle.request': <LocalRequest: GET http://127.0.0.1/bar/baz.html>, ...}
key = 'PATH_INFO'

    def assertRedirect(self, target, result, query=None, status=303, **args):
        env = {'SERVER_PROTOCOL': 'HTTP/1.1'}
        for key in list(args):
            if key.startswith('wsgi'):
                args[key.replace('_', '.', 1)] = args[key]
                del args[key]
        env.update(args)
        request.bind(env)
        bottle.response.bind()
        try:
>           bottle.redirect(target, **(query or {}))

test/test_environ.py:791: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

url = './test.html', code = 303

    def redirect(url, code=None):
        """ Aborts execution and causes a 303 or 302 redirect, depending on
            the HTTP protocol version. """
        if not code:
            code = 303 if request.get('SERVER_PROTOCOL') == "HTTP/1.1" else 302
        res = response.copy(cls=HTTPResponse)
        res.status = code
        res.body = ""
        res.set_header('Location', urljoin(request.url, url))
>       raise res
E       bottle.HTTPResponse

bottle.py:2823: HTTPResponse

During handling of the above exception, another exception occurred:

self = <test.test_environ.TestRedirect testMethod=test_relative_path>

    def test_relative_path(self):
        self.assertRedirect('./', 'http://127.0.0.1/')
        self.assertRedirect('./test.html', 'http://127.0.0.1/test.html')
        self.assertRedirect('./test.html', 'http://127.0.0.1/foo/test.html',
                            PATH_INFO='/foo/')
        self.assertRedirect('./test.html', 'http://127.0.0.1/foo/test.html',
                            PATH_INFO='/foo/bar.html')
        self.assertRedirect('./test.html', 'http://127.0.0.1/foo/test.html',
                            SCRIPT_NAME='/foo/')
>       self.assertRedirect('./test.html', 'http://127.0.0.1/foo/bar/test.html',
                            SCRIPT_NAME='/foo/', PATH_INFO='/bar/baz.html')

test/test_environ.py:819: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
test/test_environ.py:795: in assertRedirect
    self.assertEqual(result, E.headers['Location'])
E   AssertionError: 'http://127.0.0.1/foo/bar/test.html' != 'http://127.0.0.1/bar/test.html'
E   - http://127.0.0.1/foo/bar/test.html
E   ?                  ----
E   + http://127.0.0.1/bar/test.html
________________________ TestRedirect.test_specialchars ________________________

self = <test.test_environ.TestRedirect testMethod=test_specialchars>
target = './te st.html', result = 'http://example.com/a%20a/b%20b/te st.html'
query = None, status = 303
args = {'HTTP_HOST': 'example.com', 'PATH_INFO': '/b b/', 'SCRIPT_NAME': '/a a/'}
env = {'HTTP_HOST': 'example.com', 'PATH_INFO': '/b b/', 'SCRIPT_NAME': '/a a/', 'SERVER_PROTOCOL': 'HTTP/1.1', ...}
key = 'PATH_INFO'

    def assertRedirect(self, target, result, query=None, status=303, **args):
        env = {'SERVER_PROTOCOL': 'HTTP/1.1'}
        for key in list(args):
            if key.startswith('wsgi'):
                args[key.replace('_', '.', 1)] = args[key]
                del args[key]
        env.update(args)
        request.bind(env)
        bottle.response.bind()
        try:
>           bottle.redirect(target, **(query or {}))

test/test_environ.py:791: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

url = './te st.html', code = 303

    def redirect(url, code=None):
        """ Aborts execution and causes a 303 or 302 redirect, depending on
            the HTTP protocol version. """
        if not code:
            code = 303 if request.get('SERVER_PROTOCOL') == "HTTP/1.1" else 302
        res = response.copy(cls=HTTPResponse)
        res.status = code
        res.body = ""
        res.set_header('Location', urljoin(request.url, url))
>       raise res
E       bottle.HTTPResponse

bottle.py:2823: HTTPResponse

During handling of the above exception, another exception occurred:

self = <test.test_environ.TestRedirect testMethod=test_specialchars>

    def test_specialchars(self):
        ''' The target URL is not quoted automatically. '''
>       self.assertRedirect('./te st.html',
                            'http://example.com/a%20a/b%20b/te st.html',
                            HTTP_HOST='example.com', SCRIPT_NAME='/a a/', PATH_INFO='/b b/')

test/test_environ.py:871: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
test/test_environ.py:795: in assertRedirect
    self.assertEqual(result, E.headers['Location'])
E   AssertionError: 'http://example.com/a%20a/b%20b/te st.html' != 'http://example.com/b%20b/te st.html'
E   - http://example.com/a%20a/b%20b/te st.html
E   ?                    ------
E   + http://example.com/b%20b/te st.html
______________________ TestAppMounting.test_mount_get_url ______________________

self = <test.test_mount.TestAppMounting testMethod=test_mount_get_url>

    def test_mount_get_url(self):
        @self.subapp.route('/test', name="test")
        def route():
            return bottle.url("test")
    
        self.app.mount('/test/', self.subapp)
>       self.assertBody('/test/test', '/test/test')

test/test_mount.py:111: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
test/tools.py:135: in assertBody
    self.assertEqual(tob(body), self.urlopen(route, **kargs)['body'])
E   AssertionError: b'/test/test' != b'test/test'
_________________________ TestRouteDecorator.test_name _________________________

self = <test.test_wsgi.TestRouteDecorator testMethod=test_name>

    def test_name(self):
        @bottle.route(name='foo')
        def test(x=5): return 'ok'
>       self.assertEqual('/test/6', bottle.url('foo', x=6))
E       AssertionError: '/test/6' != 'test/6'
E       - /test/6
E       ? -
E       + test/6

test/test_wsgi.py:401: AssertionError
________________________ TestDecorators.test_routebuild ________________________

self = <test.test_wsgi.TestDecorators testMethod=test_routebuild>

    def test_routebuild(self):
        """ WSGI: Test route builder """
        def foo(): pass
        bottle.route('/a/<b>/c', name='named')(foo)
        bottle.request.environ['SCRIPT_NAME'] = ''
>       self.assertEqual('/a/xxx/c', bottle.url('named', b='xxx'))
E       AssertionError: '/a/xxx/c' != 'a/xxx/c'
E       - /a/xxx/c
E       ? -
E       + a/xxx/c

test/test_wsgi.py:454: AssertionError
=========================== short test summary info ============================
FAILED test/test_environ.py::TestRequest::test_url - AssertionError: 'http://...
FAILED test/test_environ.py::TestRedirect::test_relative_path - AssertionErro...
FAILED test/test_environ.py::TestRedirect::test_specialchars - AssertionError...
FAILED test/test_mount.py::TestAppMounting::test_mount_get_url - AssertionErr...
FAILED test/test_wsgi.py::TestRouteDecorator::test_name - AssertionError: '/t...
FAILED test/test_wsgi.py::TestDecorators::test_routebuild - AssertionError: '...
======================== 6 failed, 349 passed in 0.83s =========================

https://docs.python.org/3.14/whatsnew/3.14.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.14/fedora-rawhide-x86_64/08189188-python-bottle/

For all our attempts to build python-bottle with Python 3.14, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/package/python-bottle/

Testing and mass rebuild of packages is happening in copr.
You can follow these instructions to test locally in mock if your package builds with Python 3.14:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/

Let us know here if you have any questions.

Python 3.14 is planned to be included in Fedora 43.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.14.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires),
so if this package is required a lot, it's important for us to get it fixed soon.

We'd appreciate help from the people who know this package best,
but if you don't want to work on this now, let us know so we can try to work around it on our side.