layers = [
    [ pcbnew.F_Cu,      'F_Cu' ],
    [ pcbnew.B_Cu,      'B_Cu' ],
    [ pcbnew.F_SilkS,   'F_Silks' ],
    [ pcbnew.B_SilkS,   'B_Silks' ],
    [ pcbnew.F_Mask,    'F_Mask' ],
    [ pcbnew.B_Mask,    'B_Mask' ],
    [ pcbnew.F_Paste,   'F_Paste' ],
    [ pcbnew.B_Paste,   'B_Paste' ],
    [ pcbnew.Edge_Cuts, 'Edge_Cuts' ],
    [ pcbnew.In1_Cu,    'In1_Cu' ],
    [ pcbnew.In2_Cu,    'In2_Cu' ],
    [ pcbnew.In3_Cu,    'In3_Cu' ],
    [ pcbnew.In4_Cu,    'In4_Cu' ],
]

{
    # https://support.jlcpcb.com/article/22-how-to-generate-the-gerber-files
    # https://support.jlcpcb.com/article/149-how-to-generate-gerber-and-drill-files-in-kicad
    'name': 'JLCPCB',
    'useAuxOrigin': False,
    'gerberProtelExtensions': True,
    'excellonFormat': pcbnew.EXCELLON_WRITER.DECIMAL_FORMAT,
    'drillMergeNpth': False,
    'drillMinimalHeader': False,
    'layerRenameRules': {
        pcbnew.F_Cu:      '[boardProjectName].GTL',
        pcbnew.B_Cu:      '[boardProjectName].GBL',
        pcbnew.F_SilkS:   '[boardProjectName].GTO',
        pcbnew.B_SilkS:   '[boardProjectName].GBO',
        pcbnew.F_Mask:    '[boardProjectName].GTS',
        pcbnew.B_Mask:    '[boardProjectName].GBS',
        pcbnew.F_Paste:   '[boardProjectName].GTP',
        pcbnew.B_Paste:   '[boardProjectName].GBP',
        pcbnew.Edge_Cuts: '[boardProjectName].GKO',
        pcbnew.In1_Cu:    '[boardProjectName].GL2',
        pcbnew.In2_Cu:    '[boardProjectName].GL3',
    },
    'drillExtensionRenameTo': 'TXT',
},