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64 lines
1.8 KiB
Nix
64 lines
1.8 KiB
Nix
# buildEnv creates a tree of symlinks to the specified paths. This is
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# a fork of the buildEnv in the Nix distribution. Most changes should
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# eventually be merged back into the Nix distribution.
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{ perl, runCommand, lib }:
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{ name
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, # The manifest file (if any). A symlink $out/manifest will be
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# created to it.
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manifest ? ""
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, # The paths to symlink.
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paths
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, # Whether to ignore collisions or abort.
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ignoreCollisions ? false
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, # If there is a collision, check whether the contents and permissions match
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# and only if not, throw a collision error.
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checkCollisionContents ? true
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, # The paths (relative to each element of `paths') that we want to
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# symlink (e.g., ["/bin"]). Any file not inside any of the
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# directories in the list is not symlinked.
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pathsToLink ? ["/"]
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, # The package outputs to include. By default, only the default
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# output is included.
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extraOutputsToLink ? []
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, # Root the result in directory "$out${extraPrefix}", e.g. "/share".
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extraPrefix ? ""
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, # Shell commands to run after building the symlink tree.
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postBuild ? ""
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, # Additional inputs. Handy e.g. if using makeWrapper in `postBuild`.
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buildInputs ? []
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, passthru ? {}
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, meta ? {}
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}:
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runCommand name
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rec {
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inherit manifest ignoreCollisions checkCollisionContents passthru
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meta pathsToLink extraPrefix postBuild buildInputs;
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pkgs = builtins.toJSON (map (drv: {
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paths =
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[ drv ]
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++ lib.filter (p: p!=null)
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(builtins.map (outName: drv.${outName} or null) extraOutputsToLink);
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priority = drv.meta.priority or 5;
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}) paths);
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preferLocalBuild = true;
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# XXX: The size is somewhat arbitrary
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passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else null;
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}
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''
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${perl}/bin/perl -w ${./builder.pl}
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eval "$postBuild"
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''
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