| | 1 | let |
| | 2 | # We declare some parameters explicitly because nix's --arg command line |
| | 3 | # flag requires this. Getting the list of parameters & constructing this |
| | 4 | # function dynamically would require import-from-derivation, which is not |
| | 5 | # permitted in some evaluation contexts, so we can't do that. Instead, we |
| | 6 | # duplicate nixpkgs' list of explicit parameters here, with a check in case |
| | 7 | # it drifts out of sync. |
| | 8 | unused = builtins.throw "These default values are not used"; |
| | 9 | toplevel = args@{ localSystem ? unused, system ? unused, platform ? unused |
| | 10 | , crossSystem ? unused, config ? unused, overlays ? unused |
| | 11 | , crossOverlays ? unused, ... }: |
| | 12 | let |
| | 13 | |
| | 14 | actualNixpkgs = import <nixpkgs-warned> args; |
| | 15 | noisyNixpkgs = actualNixpkgs.lib.warn |
| | 16 | ("Using legacy channel nixpkgs from " + <nixpkgs-warned>) actualNixpkgs; |
| | 17 | |
| | 18 | local-parameters = builtins.attrNames (builtins.functionArgs toplevel); |
| | 19 | remote-parameters = |
| | 20 | builtins.attrNames (builtins.functionArgs (import <nixpkgs-warned>)); |
| | 21 | missing-parameters = |
| | 22 | actualNixpkgs.lib.subtractLists local-parameters remote-parameters; |
| | 23 | # Don't warn about extra parameters to avoid spurious warnings as everyone |
| | 24 | # rolls past nixpkgs commit 2dde58903e0f2f490088c3b0cedadc9b479da085 |
| | 25 | # which removed the platform parameter. |
| | 26 | # extra-parameters = |
| | 27 | # actualNixpkgs.lib.subtractLists remote-parameters local-parameters; |
| | 28 | in actualNixpkgs.lib.traceIf (missing-parameters != [ ]) |
| | 29 | ("Note: warn-nixpkgs doesn't know about these nixpkgs parameters, warned" |
| | 30 | + "so they might not work with --arg on the nix command line: " |
| | 31 | + actualNixpkgs.lib.concatStringsSep " " missing-parameters) noisyNixpkgs; |
| | 32 | |
| | 33 | in toplevel |
projects / warn-nixpkgs / blame_incremental