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authorJoey Hess2015-12-05 17:52:43 -0400
committerJoey Hess2015-12-05 17:53:16 -0400
commit12548bae3d8feecce6a322162d91b827289ae824 (patch)
tree45f5ec5131817aab5133c9c1e4dbcf3364953e76 /src/Propellor/Property/Chroot.hs
parentb816e40e2618a8932144bceb7c7039adc5c44c11 (diff)
UncheckedProperty for cmdProperty et al
* Properties that run an arbitrary command, such as cmdProperty and scriptProperty are converted to use UncheckedProperty, since they cannot tell on their own if the command truely made a change or not. (API Change) Transition guide: - When GHC complains about an UncheckedProperty, add: `assume` MadeChange - Since these properties used to always return MadeChange, that change is always safe to make. - Or, if you know that the command should modifiy a file, use: `changesFile` filename * A few properties have had their Result improved, for example Apt.buldDep and Apt.autoRemove now check if a change was made or not.
Diffstat (limited to 'src/Propellor/Property/Chroot.hs')
-rw-r--r--src/Propellor/Property/Chroot.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/Propellor/Property/Chroot.hs b/src/Propellor/Property/Chroot.hs
index 30c11ed3..cfa70e9f 100644
--- a/src/Propellor/Property/Chroot.hs
+++ b/src/Propellor/Property/Chroot.hs
@@ -74,6 +74,7 @@ extractTarball :: FilePath -> FilePath -> Property HasInfo
extractTarball target src = toProp .
check (unpopulated target) $
cmdProperty "tar" params
+ `assume` MadeChange
`requires` File.dirExists target
where
params =