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/awxjlc9saq15z005djgc42lx03rwhjjn-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 ‘gobject-introspection-1.80.1’ in /nix/store/awxjlc9saq15z005djgc42lx03rwhjjn-source/pkgs/development/libraries/gobject-introspection/default.nix:181 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/z1r4ibskf8kjqa0jzq840brcb1kpab2w-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 ‘scrolls-2015-10-13’ in /nix/store/z1r4ibskf8kjqa0jzq840brcb1kpab2w-source/pkgs/by-name/sc/scrolls/package.nix:17 has an unfree license (‘unfree’), 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) [

             "scrolls"

           ];

         }

       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/sg6kwrkvkq0qf4pxdczl8b5swa2dp0s6-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 ‘libbsd-0.12.2’ in /nix/store/sg6kwrkvkq0qf4pxdczl8b5swa2dp0s6-source/pkgs/by-name/li/libbsd/package.nix:49 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

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

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

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/y137k9dj9jkwky8ghnsv1zqfgy52q7ad-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/y137k9dj9jkwky8ghnsv1zqfgy52q7ad-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/18012s0x6yf1hzrzw204qv3f2vzd8pdp-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/18012s0x6yf1hzrzw204qv3f2vzd8pdp-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

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

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

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/2x0pklgrqgjpvz9c27yi92ayby71ja6c-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/2x0pklgrqgjpvz9c27yi92ayby71ja6c-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/fd64rwhgnqk19fs4z00x4sbwkr220rc7-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 ‘gnutls-3.8.9’ in /nix/store/fd64rwhgnqk19fs4z00x4sbwkr220rc7-source/pkgs/development/libraries/gnutls/default.nix:250 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/l64x7shbicm2vsf958w48mr5f20s7wgw-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/l64x7shbicm2vsf958w48mr5f20s7wgw-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/6110d05kg6xxj49ji38qrs44wrli23qw-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/6110d05kg6xxj49ji38qrs44wrli23qw-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/pcz44xmf4q1hdpni5la02z7j8zvy514y-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/pcz44xmf4q1hdpni5la02z7j8zvy514y-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/2gnhixfp1vqp1vspsjvm16y75lq2p10n-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/2gnhixfp1vqp1vspsjvm16y75lq2p10n-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/31qhnfcw800yjc7qlzi5yl5rdjclsh65-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/31qhnfcw800yjc7qlzi5yl5rdjclsh65-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/1hb8ir605k6a86p8vr85rb2jqljl1n08-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/1hb8ir605k6a86p8vr85rb2jqljl1n08-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

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/wjayypr1bd9p4zdhg5ccbi7bgvmp85vy-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/wjayypr1bd9p4zdhg5ccbi7bgvmp85vy-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/mgj9kcpsx651m4wv9k3yxwrwjk4bzx7n-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 ‘gnutls-3.8.9’ in /nix/store/mgj9kcpsx651m4wv9k3yxwrwjk4bzx7n-source/pkgs/development/libraries/gnutls/default.nix:250 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/dbk7rh8hfwma7ds01i42w2gjwcyirwcp-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/dbk7rh8hfwma7ds01i42w2gjwcyirwcp-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.