GC Warning: Failed to expand heap by 4194304 KiB
error:
       … while evaluating attribute 'drv'
         at /nix/store/x0g2h5zlfzcpibq7f39igy60gf2g8knr-filnix-experiment-0.11.1/lib/experiment/planner.nix:14:3:
           13| {
           14|   drv = p.drvPath;
             |   ^
           15|   name = p.name;

       … while evaluating the attribute 'drvPath'
         at /nix/store/2icign16g7i8pb268c3g5zr5vc4nd6mb-source/lib/customisation.nix:418:7:
          417|     // {
          418|       drvPath =
             |       ^
          419|         assert condition;

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: Package ‘gtk+3-3.24.49’ in /nix/store/2icign16g7i8pb268c3g5zr5vc4nd6mb-source/pkgs/development/libraries/gtk/3.x.nix:261 is marked as broken, refusing to evaluate.

       a) To temporarily allow broken packages, you can use an environment variable
          for a single invocation of the nix tools.

            $ export NIXPKGS_ALLOW_BROKEN=1

          Note: When using `nix shell`, `nix build`, `nix develop`, etc with a flake,
                then pass `--impure` in order to allow use of environment variables.

       b) For `nixos-rebuild` you can set
         { nixpkgs.config.allowBroken = true; }
       in configuration.nix to override this.

       c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
         { allowBroken = true; }
       to ~/.config/nixpkgs/config.nix.
GC Warning: Failed to expand heap by 4194304 KiB
error:
       … while evaluating attribute 'drv'
         at /nix/store/x0g2h5zlfzcpibq7f39igy60gf2g8knr-filnix-experiment-0.11.1/lib/experiment/planner.nix:14:3:
           13| {
           14|   drv = p.drvPath;
             |   ^
           15|   name = p.name;

       … while evaluating the attribute 'drvPath'
         at /nix/store/g4ad1kzxsv3ydw02srsipnwm6l82xz6d-source/lib/customisation.nix:418:7:
          417|     // {
          418|       drvPath =
             |       ^
          419|         assert condition;

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: Package ‘snes9x-1.63’ in /nix/store/g4ad1kzxsv3ydw02srsipnwm6l82xz6d-source/pkgs/by-name/sn/snes9x/package.nix:122 has an unfree license (‘unfreeRedistributable’), refusing to evaluate.

       a) To temporarily allow unfree packages, you can use an environment variable
          for a single invocation of the nix tools.

            $ export NIXPKGS_ALLOW_UNFREE=1

          Note: When using `nix shell`, `nix build`, `nix develop`, etc with a flake,
                then pass `--impure` in order to allow use of environment variables.

       b) For `nixos-rebuild` you can set
         { nixpkgs.config.allowUnfree = true; }
       in configuration.nix to override this.

       Alternatively you can configure a predicate to allow specific packages:
         { nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
             "snes9x"
           ];
         }

       c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
         { allowUnfree = true; }
       to ~/.config/nixpkgs/config.nix.
GC Warning: Failed to expand heap by 4194304 KiB
error:
       … while evaluating attribute 'drv'
         at /nix/store/x0g2h5zlfzcpibq7f39igy60gf2g8knr-filnix-experiment-0.11.1/lib/experiment/planner.nix:14:3:
           13| {
           14|   drv = p.drvPath;
             |   ^
           15|   name = p.name;

       … while evaluating the attribute 'drvPath'
         at /nix/store/qlvjrghk5jlzg4xaziv5nw1ckkcskixy-source/lib/customisation.nix:418:7:
          417|     // {
          418|       drvPath =
             |       ^
          419|         assert condition;

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: Package ‘snes9x-gtk-1.63’ in /nix/store/qlvjrghk5jlzg4xaziv5nw1ckkcskixy-source/pkgs/by-name/sn/snes9x/package.nix:122 has an unfree license (‘unfreeRedistributable’), refusing to evaluate.

       a) To temporarily allow unfree packages, you can use an environment variable
          for a single invocation of the nix tools.

            $ export NIXPKGS_ALLOW_UNFREE=1

          Note: When using `nix shell`, `nix build`, `nix develop`, etc with a flake,
                then pass `--impure` in order to allow use of environment variables.

       b) For `nixos-rebuild` you can set
         { nixpkgs.config.allowUnfree = true; }
       in configuration.nix to override this.

       Alternatively you can configure a predicate to allow specific packages:
         { nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
             "snes9x-gtk"
           ];
         }

       c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
         { allowUnfree = true; }
       to ~/.config/nixpkgs/config.nix.
GC Warning: Failed to expand heap by 4194304 KiB
GC Warning: Failed to expand heap by 4194304 KiB
GC Warning: Failed to expand heap by 4194304 KiB
error:
       … while evaluating attribute 'drv'
         at /nix/store/x0g2h5zlfzcpibq7f39igy60gf2g8knr-filnix-experiment-0.11.1/lib/experiment/planner.nix:14:3:
           13| {
           14|   drv = p.drvPath;
             |   ^
           15|   name = p.name;

       … while evaluating the attribute 'drvPath'
         at /nix/store/dbjbkj272gkg48z7w1b2brpjvjjpy3aw-source/lib/customisation.nix:418:7:
          417|     // {
          418|       drvPath =
             |       ^
          419|         assert condition;

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: Package ‘gtk+3-3.24.49’ in /nix/store/dbjbkj272gkg48z7w1b2brpjvjjpy3aw-source/pkgs/development/libraries/gtk/3.x.nix:261 is marked as broken, refusing to evaluate.

       a) To temporarily allow broken packages, you can use an environment variable
          for a single invocation of the nix tools.

            $ export NIXPKGS_ALLOW_BROKEN=1

          Note: When using `nix shell`, `nix build`, `nix develop`, etc with a flake,
                then pass `--impure` in order to allow use of environment variables.

       b) For `nixos-rebuild` you can set
         { nixpkgs.config.allowBroken = true; }
       in configuration.nix to override this.

       c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
         { allowBroken = true; }
       to ~/.config/nixpkgs/config.nix.