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| author | Shea Levy <shea@shealevy.com> | 2015-11-27T19·20-0500 |
|---|---|---|
| committer | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2016-01-05T12·55+0100 |
| commit | 14080f3e4b9e7c45754b9750424250cadcc066e1 (patch) | |
| tree | 5fc8eb6939cdffa357231544dc6c7dcebe9ae484 /src/libexpr/attr-path.hh | |
| parent | 6298afc0478222eb0d5e57eaafe46965a1df7ca3 (diff) | |
Use __toString when coercing sets to strings.
For example, "${{ foo = "bar"; __toString = x: x.foo; }}" evaluates
to "bar".
With this, we can delay calling functions like mkDerivation,
buildPythonPackage, etc. until we actually need a derivation, enabling
overrides and other modifications to happen by simple attribute set
update.
Diffstat (limited to 'src/libexpr/attr-path.hh')
0 files changed, 0 insertions, 0 deletions