我在解决 Ubuntu 16.04 LTS 上的 Unreal Engine 依赖项时遇到了极大的困难。我现在面临一个两难境地，似乎需要我要么删除 numpy，要么放弃 Unreal Engine 的安装。有人能解释一下我如何解决这个问题吗，因为我将同时使用这两个。这是我安装 clang-3.8 依赖项 libblang1-3.8 时来自 aptitude 的日志。简而言之，clang-3.8 及其依赖项是问题所在：
The following NEW packages will be installed:
libclang1-3.8 libobjc-5-dev{ab} libobjc4{ab}
0 packages upgraded, 3 newly installed, 0 to remove and 0 not upgraded.
Need to get 4,624 kB of archives. After unpacking 18.4 MB will be used.
The following packages have unmet dependencies:
libobjc4 : Depends: gcc-5-base (= 5.3.1-14ubuntu2) but 5.4.0-6ubuntu1~16.04.6 is installed.
libobjc-5-dev : Depends: gcc-5-base (= 5.3.1-14ubuntu2) but 5.4.0-6ubuntu1~16.04.6 is installed.
Depends: libgcc-5-dev (= 5.3.1-14ubuntu2) but 5.4.0-6ubuntu1~16.04.6 is installed.
The following actions will resolve these dependencies:
Keep the following packages at their current version:
1) libclang1-3.8 [Not Installed]
2) libobjc-5-dev [Not Installed]
3) libobjc4 [Not Installed]
Accept this solution? [Y/n/q/?] n
The following actions will resolve these dependencies:
Remove the following packages:
1) libgfortran3
2) liblapack3
3) python-numpy
Downgrade the following packages:
4) cpp-5 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
5) g++-5 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
6) gcc-5 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
7) gcc-5-base [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
8) gcc-5-base:i386 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
9) libasan2 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
10) libatomic1 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
11) libcc1-0 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
12) libcilkrts5 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
13) libgcc-5-dev [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
14) libgomp1 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
15) libitm1 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
16) liblsan0 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
17) libmpx0 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
18) libquadmath0 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
19) libstdc++-5-dev [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
20) libstdc++6 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
21) libstdc++6:i386 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
22) libtsan0 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
23) libubsan0 [5.4.0-6ubuntu1~16.04.6 (now) -> 5.3.1-14ubuntu2 (xenial)]
Leave the following dependencies unresolved:
24) inkscape recommends python-numpy
Accept this solution? [Y/n/q/?] q
Abandoning all efforts to resolve these dependencies.
Abort.