安装反射-dom可能会破坏ghcjs。

Question

我试图使用reflex和reflex-dom安装cabal install，我收到了以下错误消息：

$ cabal install reflex-dom

...

cabal: The following packages are likely to be broken by the reinstalls:
lens-4.15.1
ghcjs-0.2.0
free-4.12.4
kan-extensions-5.0.1
adjunctions-4.3
Use --force-reinstalls if you want to install anyway.

ghcjs on GitHub在0.2.0的“主”分支上，0.2.1在一个叫做"dedupe“的分支上。我也害怕打破lens。有没有办法以一致的方式安装 reflex 和 reflex-dom ？可能需要更改.cabal文件

这是终端的全部响应。

$ cabal install reflex-dom

Resolving dependencies...
In order, the following would be installed:
bifunctors-5.3 (latest: 5.4.1) (via: reflex-dom-0.3 these-0.6.2.1 lens-4.13.2.1 free-4.12.4 semigroupoids-5.0.1 profunctors-5.2) (new version)
data-default-instances-base-0.1.0.1 (via: data-default-0.5.3) (new package)
data-default-0.5.3 (latest: 0.7.1.1) (via: reflex-dom-0.3) (new version)
dependent-sum-0.3.2.2 (latest: 0.4) (via: reflex-dom-0.3 reflex-0.4.0 dependent-sum-template-0.0.0.5 dependent-map-0.2.4.0) (new package)
dependent-map-0.2.4.0 (via: reflex-dom-0.3 reflex-0.4.0) (new package)
exception-transformers-0.4.0.5 (via: reflex-dom-0.3 reflex-0.4.0) (new package)
haskell-src-exts-1.17.1 (latest: 1.19.1) (via: reflex-0.4.0 haskell-src-meta-0.6.0.14) (new version)
haskell-src-meta-0.6.0.14 (latest: 0.7.0.1) (via: reflex-0.4.0) (new version)
profunctors-5.2 (via: these-0.6.2.1 lens-4.13.2.1 adjunctions-4.3 free-4.12.4) (reinstall) (changes: bifunctors-5.4.1 -> 5.3)
raw-strings-qq-1.1 (via: reflex-dom-0.3) (new package)
ref-tf-0.4.0.1 (via: reflex-dom-0.3 reflex-0.4.0) (new package)
semigroupoids-5.0.1 (latest: 5.1) (via: these-0.6.2.1 lens-4.13.2.1 kan-extensions-5.0.1 adjunctions-4.3 free-4.12.4) (new version)
free-4.12.4 (via: lens-4.13.2.1 kan-extensions-5.0.1 adjunctions-4.3) (reinstall) (changes: bifunctors-5.4.1 -> 5.3, semigroupoids-5.1 -> 5.0.1)
adjunctions-4.3 (via: kan-extensions-5.0.1) (reinstall) (changes: semigroupoids-5.1 -> 5.0.1)
kan-extensions-5.0.1 (via: lens-4.13.2.1) (reinstall) (changes: semigroupoids-5.1 -> 5.0.1)
lens-4.13.2.1 (latest: 4.15.1) (via: reflex-dom-0.3) (new version)
th-extras-0.0.0.4 (via: dependent-sum-template-0.0.0.5) (new package)
dependent-sum-template-0.0.0.5 (via: reflex-dom-0.3) (new package)
these-0.6.2.1 (latest: 0.7.3) (via: reflex-dom-0.3 reflex-0.4.0) (new package)
reflex-0.4.0 (via: reflex-dom-0.3) (new package)
utf8-string-1.0.1.1 (via: glib-0.13.4.1 cairo-0.13.3.1) (new package)
cairo-0.13.3.1 (via: webkitgtk3-0.14.2.1 gtk3-0.14.6 pango-0.13.3.1) (new package)
glib-0.13.4.1 (via: reflex-dom-0.3 webkitgtk3-javascriptcore-0.13.2.0 ghcjs-dom-0.2.4.0 webkitgtk3-0.14.2.1 gtk3-0.14.6 pango-0.13.3.1 gio-0.13.3.1) (new package)
gio-0.13.3.1 (via: gtk3-0.14.6) (new package)
pango-0.13.3.1 (via: webkitgtk3-0.14.2.1 gtk3-0.14.6) (new package)
gtk3-0.14.6 (via: reflex-dom-0.3 webkitgtk3-javascriptcore-0.13.2.0 ghcjs-dom-0.2.4.0 webkitgtk3-0.14.2.1) (new package)
webkitgtk3-0.14.2.1 (via: reflex-dom-0.3 webkitgtk3-javascriptcore-0.13.2.0 ghcjs-dom-0.2.4.0) (new package)
ghcjs-dom-0.2.4.0 (latest: 0.7.0.4) (via: reflex-dom-0.3) (new package)
webkitgtk3-javascriptcore-0.13.2.0 (latest: 0.14.2.1) (via: reflex-dom-0.3) (new package)
reflex-dom-0.3 (new package)
cabal: The following packages are likely to be broken by the reinstalls:
lens-4.15.1
ghcjs-0.2.0
Use --force-reinstalls if you want to install anyway.

与安装反射类似

$ cabal install reflex

Resolving dependencies...
In order, the following would be installed:
bifunctors-5.3 (latest: 5.4.1) (via: these-0.6.2.1 semigroupoids-5.0.1 profunctors-5.2) (new version)
dependent-sum-0.3.2.2 (latest: 0.4) (via: reflex-0.4.0 dependent-map-0.2.4.0) (new package)
dependent-map-0.2.4.0 (via: reflex-0.4.0) (new package)
exception-transformers-0.4.0.5 (via: reflex-0.4.0) (new package)
haskell-src-exts-1.17.1 (latest: 1.19.1) (via: reflex-0.4.0 haskell-src-meta-0.6.0.14) (new version)
haskell-src-meta-0.6.0.14 (latest: 0.7.0.1) (via: reflex-0.4.0) (new version)
profunctors-5.2 (via: these-0.6.2.1) (reinstall) (changes: bifunctors-5.4.1 -> 5.3)
ref-tf-0.4.0.1 (via: reflex-0.4.0) (new package)
semigroupoids-5.0.1 (latest: 5.1) (via: these-0.6.2.1) (new version)
these-0.6.2.1 (latest: 0.7.3) (via: reflex-0.4.0) (new package)
reflex-0.4.0 (new package)
cabal: The following packages are likely to be broken by the reinstalls:
lens-4.15.1
ghcjs-0.2.0
free-4.12.4
kan-extensions-5.0.1
adjunctions-4.3
Use --force-reinstalls if you want to install anyway.

Answer 1

在linux环境中以一致的方式安装反射和反射(也包括ghcjs )的最好方法是遵循反射平台自述的设置说明。

这个过程相当于克隆反射平台存储库，并从该存储库中运行一个脚本“试试看-反射”。try-条件反射脚本启动一个shell，您可以从它运行ghcjs，它将完全访问反射/反射-dom。这个外壳环境是独立于您以前安装在您的计算机上，所以您不必担心弄坏镜头或任何其他阴谋包，您已经到位。