nix-helpers: 0395381195ee20dfb9fc1e5dc426c0e9b2ce22f3

     1: { isBroken, lib, runCommand, withNix }:
     2: 
     3: with import ./util.nix { inherit lib; };
     4: with {
     5:   testStillNeeded = if needWorkaround then {
     6:     workaroundStillNeeded = isBroken (runCommand "withNix-workaround-needed"
     7:       (withNix { NIX_REMOTE = "daemon"; }) ''
     8:         nix-build -E '(import <nixpkgs> {}).hello'
     9:         mkdir "$out"
    10:       '');
    11:   } else
    12:     { };
    13: };
    14: testStillNeeded // {
    15:   canEvalNumbers = runCommand "withNix-can-eval-number" (withNix { }) ''
    16:     X=$(nix-instantiate --eval -E '1 + 2')
    17:     [[ "$X" -eq 3 ]] || {
    18:       echo "Expected 3, got '$X'" 1>&2
    19:       exit 1
    20:     }
    21:     mkdir "$out"
    22:   '';
    23:   canEvalDerivations = runCommand "withNix-can-eval-derivation" (withNix { }) ''
    24:     X=$(nix-instantiate --eval -E '(import <nixpkgs> {}).hello') || {
    25:       echo "$X" 1>&2
    26:       exit 1
    27:     }
    28:     mkdir "$out"
    29:   '';
    30:   canInstantiate = runCommand "withNix-can-instantiate" (withNix { }) ''
    31:     unset NIX_LOG_FD
    32:     nix-instantiate -E '(import <nixpkgs> {}).hello'
    33:     mkdir "$out"
    34:   '';
    35:   canRealise = runCommand "withNix-can-realise" (withNix { }) ''
    36:     DRV=$(nix-instantiate -E '(import <nixpkgs> {}).hello') || {
    37:       echo "$DRV" 1>&2
    38:       exit 1
    39:     }
    40:     nix-store --realise "$DRV"
    41:     mkdir "$out"
    42:   '';
    43:   canShell = runCommand "withNix-can-shell" (withNix { }) ''
    44:     X=$(nix-shell -p hello --run 'echo 42') || {
    45:       echo "$X" 1>&2
    46:       exit 1
    47:     }
    48:     [[ "$X" -eq 42 ]] || {
    49:       echo "Expected 42 got '$X'" 1>&2
    50:       exit 1
    51:     }
    52:     mkdir "$out"
    53:   '';
    54:   canBuildHello = runCommand "withNix-can-build-hello" (withNix { }) ''
    55:     nix-build --show-trace --no-out-link -E 'with import <nixpkgs> {}; hello'
    56:     mkdir "$out"
    57:   '';
    58:   canAccessFiles = runCommand "withNix-can-access-files" (withNix { }) ''
    59:     echo "<nixpkgs>" > ./test.nix
    60:     nix-build --show-trace -E '(import (import ./test.nix) {}).hello'
    61:     mkdir "$out"
    62:   '';
    63: }