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author | Eelco Dolstra <edolstra@gmail.com> | 2018-01-16T17·50+0100 |
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committer | Eelco Dolstra <edolstra@gmail.com> | 2018-01-16T18·23+0100 |
commit | d4dcffd64349bb52ad5f1b184bee5cc7c2be73b4 (patch) | |
tree | f43f027df22b6421bf83d4622c883c3ebc9f846d /tests/restricted.sh | |
parent | 23fa7e3606a2bee6e3622a61f07e66bdda9b5304 (diff) |
Add pure evaluation mode
In this mode, the following restrictions apply: * The builtins currentTime, currentSystem and storePath throw an error. * $NIX_PATH and -I are ignored. * fetchGit and fetchMercurial require a revision hash. * fetchurl and fetchTarball require a sha256 attribute. * No file system access is allowed outside of the paths returned by fetch{Git,Mercurial,url,Tarball}. Thus 'nix build -f ./foo.nix' is not allowed. Thus, the evaluation result is completely reproducible from the command line arguments. E.g. nix build --pure-eval '( let nix = fetchGit { url = https://github.com/NixOS/nixpkgs.git; rev = "9c927de4b179a6dd210dd88d34bda8af4b575680"; }; nixpkgs = fetchGit { url = https://github.com/NixOS/nixpkgs.git; ref = "release-17.09"; rev = "66b4de79e3841530e6d9c6baf98702aa1f7124e4"; }; in (import (nix + "/release.nix") { inherit nix nixpkgs; }).build.x86_64-linux )' The goal is to enable completely reproducible and traceable evaluation. For example, a NixOS configuration could be fully described by a single Git commit hash. 'nixos-rebuild' would do something like nix build --pure-eval '( (import (fetchGit { url = file:///my-nixos-config; rev = "..."; })).system ') where the Git repository /my-nixos-config would use further fetchGit calls or Git externals to fetch Nixpkgs and whatever other dependencies it has. Either way, the commit hash would uniquely identify the NixOS configuration and allow it to reproduced.
Diffstat (limited to '')
-rw-r--r-- | tests/restricted.sh | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/tests/restricted.sh b/tests/restricted.sh index c063c8693d55..6c0392facf31 100644 --- a/tests/restricted.sh +++ b/tests/restricted.sh @@ -3,7 +3,8 @@ source common.sh clearStore nix-instantiate --restrict-eval --eval -E '1 + 2' -(! nix-instantiate --restrict-eval ./simple.nix) +(! nix-instantiate --restrict-eval ./restricted.nix) +(! nix-instantiate --eval --restrict-eval <(echo '1 + 2')) nix-instantiate --restrict-eval ./simple.nix -I src=. nix-instantiate --restrict-eval ./simple.nix -I src1=simple.nix -I src2=config.nix -I src3=./simple.builder.sh @@ -28,3 +29,10 @@ nix eval --raw "(builtins.fetchurl file://$(pwd)/restricted.sh)" --restrict-eval (! nix eval --raw "(builtins.fetchurl https://github.com/NixOS/patchelf/archive/master.tar.gz)" --restrict-eval) (! nix eval --raw "(builtins.fetchTarball https://github.com/NixOS/patchelf/archive/master.tar.gz)" --restrict-eval) (! nix eval --raw "(fetchGit git://github.com/NixOS/patchelf.git)" --restrict-eval) + +ln -sfn $(pwd)/restricted.nix $TEST_ROOT/restricted.nix +[[ $(nix-instantiate --eval $TEST_ROOT/restricted.nix) == 3 ]] +(! nix-instantiate --eval --restrict-eval $TEST_ROOT/restricted.nix) +(! nix-instantiate --eval --restrict-eval $TEST_ROOT/restricted.nix -I $TEST_ROOT) +(! nix-instantiate --eval --restrict-eval $TEST_ROOT/restricted.nix -I .) +nix-instantiate --eval --restrict-eval $TEST_ROOT/restricted.nix -I $TEST_ROOT -I . |