project('test env var stacking') testenv = environment() testenv.set('TEST_VAR_SET', 'some-value') testenv.set('TEST_VAR_APPEND', 'some-value') testenv.set('TEST_VAR_PREPEND', 'some-value') testenv.append('TEST_VAR_APPEND', 'another-value-append', separator: ':') testenv.prepend('TEST_VAR_PREPEND', 'another-value-prepend', separator: ':') testenv.set('TEST_VAR_SET', 'another-value-set') test('check env', find_program('script.py'), env: testenv)