Gems为什么有时候不能自动安装依赖

lululau

rubygems.org的仓库里明明有rest-client，可却安装不上heroku这个包
前两天在安装Rials3的时候也是说缺少依赖，最终还是手动一个个解决依赖问题

1. 
   
2. liuxiang@MacBookPro: ~ $ sudo gem q -n rest-client -r
   
3. 
   
4. *** REMOTE GEMS ***
   
5. 
   
6. camelpunch-rest-client (1.1.0)
   
7. ngw_rest-client (1.2.0)
   
8. rest-client (1.6.1)
   
9. rest-client-components (1.2.0)
   
10. rest-client-multipart (1.1.0)
    
11. rest-client-next (1.3.0)
    
12. wgibbs-rest-client (1.0.5)
    
13. liuxiang@MacBookPro: ~ $ sudo gem ins heroku -r
    
14. ERROR:  Error installing heroku:
    
15.         heroku requires rest-client (>= 1.4.0, < 1.7.0, runtime)
    

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lululau

这时我安装heroku的整个过程

1. 
   
2. liuxiang@MacBookPro: ~ $ sudo gem ins heroku -r
   
3. ERROR:  Error installing heroku:
   
4.         heroku requires rest-client (>= 1.4.0, < 1.7.0, runtime)
   
5. liuxiang@MacBookPro: ~ $ sudo gem ins rest-client -r
   
6. Successfully installed rest-client-1.6.1
   
7. 1 gem installed
   
8. Installing ri documentation for rest-client-1.6.1...
   
9. Installing RDoc documentation for rest-client-1.6.1...
   
10. liuxiang@MacBookPro: ~ $ sudo gem ins heroku -r
    
11. ERROR:  Error installing heroku:
    
12.         heroku requires launchy (~> 0.3.2, runtime)
    
13. liuxiang@MacBookPro: ~ $ sudo gem q -n launchy -r
    
14. 
    
15. *** REMOTE GEMS ***
    
16. 
    
17. launchy (0.3.7)
    
18. launchy-opensearch (1.2.1)
    
19. launchy_opensearch (1.1.0)
    
20. liuxiang@MacBookPro: ~ $ sudo gem ins launchy -r
    
21. Successfully installed configuration-1.2.0
    
22. Successfully installed launchy-0.3.7
    
23. 2 gems installed
    
24. Installing ri documentation for configuration-1.2.0...
    
25. Installing ri documentation for launchy-0.3.7...
    
26. Installing RDoc documentation for configuration-1.2.0...
    
27. Installing RDoc documentation for launchy-0.3.7...
    
28. liuxiang@MacBookPro: ~ $ sudo gem ins heroku -r
    
29. ERROR:  Error installing heroku:
    
30.         heroku requires json_pure (>= 1.2.0, < 1.5.0, runtime)
    
31. liuxiang@MacBookPro: ~ $ sudo gem q -n json_pure -r
    
32. 
    
33. *** REMOTE GEMS ***
    
34. 
    
35. json_pure (1.4.6)
    
36. liuxiang@MacBookPro: ~ $ sudo gem ins json_pure -r
    
37. Successfully installed json_pure-1.4.6
    
38. 1 gem installed
    
39. Installing ri documentation for json_pure-1.4.6...
    
40. Installing RDoc documentation for json_pure-1.4.6...
    
41. liuxiang@MacBookPro: ~ $ sudo gem ins heroku -r
    
42. Successfully installed heroku-1.14.10
    
43. 1 gem installed
    
44. Installing ri documentation for heroku-1.14.10...
    
45. Installing RDoc documentation for heroku-1.14.10...
    

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2gua

依赖包先装，再装你要的heroku。

lululau

回复 3# 2gua


    我就是想问为什么Gems不能自动解决依赖？它本来不是可以的吗？

2gua

回复 4# lululau


    是呀，本来是可以的，但是不是gem库服务器刚好故障了？