# Pre-installed versions?

**URL:** <https://travis-ci.community/t/pre-installed-versions/2254>\
**Category:** Haskell\
**Created:** [February 12, 2019, 4:24pm UTC](https://travis-ci.community/t/pre-installed-versions/2254 "2019-02-12T16:24:39Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![lys](https://sea1.discourse-cdn.com/flex015/user_avatar/travis-ci.community/lys/32/1188_2.png) [@lys](https://travis-ci.community/u/lys)\
**Post date:** [February 12, 2019, 4:24pm UTC](https://travis-ci.community/t/pre-installed-versions/2254/1 "2019-02-12T16:24:40Z")

</div>

The [documentation](https://docs.travis-ci.com/user/languages/haskell) says:

> For a detailed list of pre-installed versions, please consult “Build system information” in the build log.

Could someone instruct me where to find the list? I have a log [here](https://travis-ci.com/liyishuai/lngen/builds/100634728).

---

<div class="post-metadata">

**Author:** ![BanzaiMan](https://sea1.discourse-cdn.com/flex015/user_avatar/travis-ci.community/banzaiman/32/67_2.png) [@BanzaiMan](https://travis-ci.community/u/BanzaiMan)\
**Post date:** [February 12, 2019, 5:33pm UTC](https://travis-ci.community/t/pre-installed-versions/2254/2 "2019-02-12T17:33:00Z")

</div>

Looks like our current images do not contain this information. It would have appeared in “Build system information” starting at [https://travis-ci.com/liyishuai/lngen/builds/100634728#L6](https://travis-ci.com/liyishuai/lngen/builds/100634728#L6).

---

<div class="post-metadata">

**Author:** ![BanzaiMan](https://sea1.discourse-cdn.com/flex015/user_avatar/travis-ci.community/banzaiman/32/67_2.png) [@BanzaiMan](https://travis-ci.community/u/BanzaiMan)\
**Post date:** [February 12, 2019, 10:42pm UTC](https://travis-ci.community/t/pre-installed-versions/2254/3 "2019-02-12T22:42:48Z")

</div>

If you are curious _now_, you can see what’s in `/opt/ghc`:

```
ls /opt/ghc
```