0a2f7c4ef9
Without the change the eval fails to concatenate lists as:
$ nix build --no-link -f. pypy27Packages.pluthon
error:
… while evaluating the attribute 'drvPath'
at lib/customisation.nix:365:7:
364| in commonAttrs // {
365| drvPath = assert condition; drv.drvPath;
| ^
366| outPath = assert condition; drv.outPath;
… while evaluating the attribute 'drvPath'
at lib/customisation.nix:365:7:
364| in commonAttrs // {
365| drvPath = assert condition; drv.drvPath;
| ^
366| outPath = assert condition; drv.outPath;
… while calling the 'derivationStrict' builtin
at <nix/derivation-internal.nix>:9:12:
8|
9| strict = derivationStrict drvAttrs;
| ^
10|
(stack trace truncated; use '--show-trace' to show the full trace)
error: expected a list but found a set: { type = "derivation"; LANG = «thunk»; __ignoreNulls = true; __structuredAttrs = «thunk»; all = «thunk»; args = «thunk»; buildInputs = «thunk»; builder = «thunk»; cmakeFlags = «thunk»; configureFlags = «thunk»; «45 attributes elided» }