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nixos-option: Produce nicer error messages in case of typos.

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This commit is contained in:
Nicolas B. Pierron 2014-12-20 19:52:28 +01:00
parent 640428d3c5
commit c9682a22ff
1 changed files with 12 additions and 1 deletions
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13
nixos/modules/installer/tools/nixos-option.sh
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@ -94,7 +94,7 @@ in with nixpkgs.lib;
# the user into accessors for reaching the definition and the declaration # the user into accessors for reaching the definition and the declaration
# corresponding to this option. # corresponding to this option.
generateAccessors(){ generateAccessors(){
evalNix --strict --show-trace <<EOF if result=$(evalNix --strict --show-trace <<EOF
$header $header
let let
@ -129,6 +129,17 @@ let
in in
''let option = \${walkResult.opt}; config = \${walkResult.cfg}; in'' ''let option = \${walkResult.opt}; config = \${walkResult.cfg}; in''
EOF EOF
)
then
echo $result
else
# In case of error we want to ignore the error message roduced by the
# script above, as it is iterating over each attribute, which does not
# produce a nice error message. The following code is a fallback
# solution which is cause a nicer error message in the next
# evaluation.
echo "\"let option = nixos.options${option:+.$option}; config = nixos.config${option:+.$option}; in\""
fi
} }
header="$header header="$header