sharp and canvas cannot coexist

[strarsis]

sharp and canvas modules cannot coexist in same node process,
when requiring both, execution fails with a low level error:

var sharp  = require('sharp'),
    Canvas = require('canvas');

[...]/node_modules/sharp/build/Release/../../lib/libgio-2.0.so.0: undefined symbol: g_option_group_unref
    at Error (native)
    at Object.Module._extensions..node (module.js:568:18)
    at Module.load (module.js:458:32)
    at tryModuleLoad (module.js:417:12)
    at Function.Module._load (module.js:409:3)
    at Module.require (module.js:468:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> ([...]/node_modules/sharp/index.js:12:13)
    at Module._compile (module.js:541:32)
    at Object.Module._extensions..js (module.js:550:10)
    at Module.load (module.js:458:32)
    at tryModuleLoad (module.js:417:12)
    at Function.Module._load (module.js:409:3)
    at Module.require (module.js:468:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> ([...]/test.js:1:76)

• node v6.3.0
• [email protected]
• [email protected]
• Debian Jessie (8)

Issue filed for canvas: Automattic/node-canvas#812

[papandreou]

Duplicate of #371

[lovell]

The tl;dr of #371 is that if you are relying on a system-wide installation of cairo for node-canvas then you should also rely on a system-wide installation of libvips for sharp.