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lix-releng-staging/tests/pure-eval.sh
Eelco Dolstra ca8caaec5e nix: Add --expr flag
This replaces the '(...)' installable syntax, which is not very
discoverable. The downside is that you can't have multiple expressions
or mix expressions and other installables.
2019-11-27 00:05:30 +01:00

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source common.sh
clearStore
nix eval --expr 'assert 1 + 2 == 3; true'
[[ $(nix eval --impure --expr 'builtins.readFile ./pure-eval.sh') =~ clearStore ]]
(! nix eval --expr 'builtins.readFile ./pure-eval.sh')
(! nix eval --expr builtins.currentTime)
(! nix eval --expr builtins.currentSystem)
(! nix-instantiate --pure-eval ./simple.nix)
[[ $(nix eval --impure --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x") == 123 ]]
(! nix eval --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x")
nix eval --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; sha256 = \"$(nix hash-file pure-eval.nix --type sha256)\"; })).x"