nix: Add a passthrough non-overlayFS derivation to buildFHSEnvOverlay#188
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nix: Add a passthrough non-overlayFS derivation to buildFHSEnvOverlay#188hcallahan-lowrisc wants to merge 1 commit into
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This adds an attribute to the output set <name>.hermetic which constructs a near-identical FHSEnv except using the upstream nixpkgs implementation of buildFHSEnv directly. This is intended as a debugging tool for assessing if the overlayFS-based environment builder is still required, and to comparatively debug some runtime failures which I suspect are down to leakage of the host system environment (when running Nix on e.g. Ubuntu) into the shell. The original intent of the overlayFS based shell was to improve the developer experience on non-NixOS systems by allowing more of the user's base system to propogate into the devShell for convenience. If this is a source of breakage that does not have other workarounds, or is a repeat offender for new breakage, I want to assess going forward if it is truly needed. Signed-off-by: Harry Callahan <hcallahan@lowrisc.org>
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This adds an attribute to the output set
<name>.hermeticwhich constructs a near-identical FHSEnv except using the upstream nixpkgs implementation of buildFHSEnv directly.This is intended as a debugging tool for assessing if the overlayFS-based environment builder is still required, and to comparatively debug some runtime failures which I suspect are down to leakage of the host system environment (when running Nix on e.g. Ubuntu) into the shell. The original intent of the overlayFS based shell was to improve the developer experience on non-NixOS systems by allowing more of the user's base system to propogate into the devShell for convenience. If this is a source of breakage that does not have other workarounds, or is a repeat offender for new breakage, I want to assess going forward if it is truly needed.
Related to #168