diff options
Diffstat (limited to 'nix/dependency-analyzer')
| -rw-r--r-- | nix/dependency-analyzer/default.nix | 53 |
1 files changed, 29 insertions, 24 deletions
diff --git a/nix/dependency-analyzer/default.nix b/nix/dependency-analyzer/default.nix index 54ff72912ea8..2ec8d7b5b940 100644 --- a/nix/dependency-analyzer/default.nix +++ b/nix/dependency-analyzer/default.nix @@ -16,30 +16,35 @@ let # # TODO(sterni): clean this up and expose it directDrvDeps = - if lib.versionAtLeast builtins.nixVersion "2.6" - then - # Since https://github.com/NixOS/nix/pull/1643, Nix apparently »preserves - # string context« through a readFile invocation. This has the side effect - # that it becomes possible to query the actual references a store path has. - # Not a 100% sure this is intended, but _very_ convenient for us here. - drvPath: - # if the passed path is not a derivation we can't necessarily get its - # dependencies, since it may not be representable as a Nix string due to - # NUL bytes, e.g. compressed patch files imported into the Nix store. - if builtins.match "^.+\\.drv$" drvPath == null - then [ ] - else builtins.attrNames (builtins.getContext (builtins.readFile drvPath)) - else - # For Nix < 2.6 we have to rely on HACK, namely grepping for quoted store - # path references in the file. In the future this should be replaced by - # a proper derivation parser. - drvPath: builtins.concatLists ( - builtins.filter builtins.isList ( - builtins.split - "\"(${lib.escapeRegex builtins.storeDir}/[[:alnum:]+._?=-]+.drv)\"" - (builtins.readFile drvPath) - ) - ); + let + getDeps = + if lib.versionAtLeast builtins.nixVersion "2.6" + then + # Since https://github.com/NixOS/nix/pull/1643, Nix apparently »preserves + # string context« through a readFile invocation. This has the side effect + # that it becomes possible to query the actual references a store path has. + # Not a 100% sure this is intended, but _very_ convenient for us here. + drvPath: + builtins.attrNames (builtins.getContext (builtins.readFile drvPath)) + else + # For Nix < 2.6 we have to rely on HACK, namely grepping for quoted + # store path references in the file. In the future this should be + # replaced by a proper derivation parser. + drvPath: builtins.concatLists ( + builtins.filter builtins.isList ( + builtins.split + "\"(${lib.escapeRegex builtins.storeDir}/[[:alnum:]+._?=-]+.drv)\"" + (builtins.readFile drvPath) + ) + ); + in + drvPath: + # if the passed path is not a derivation we can't necessarily get its + # dependencies, since it may not be representable as a Nix string due to + # NUL bytes, e.g. compressed patch files imported into the Nix store. + if builtins.match "^.+\\.drv$" drvPath == null + then [ ] + else getDeps drvPath; # Maps a list of derivation to the list of corresponding `drvPath`s. # |