Broken packages in Nix-shell file

[simonelnahas]

Environment

MacOS 13.2.1

Current behavior

Using the file provided in the docs here saved as default.nix:

{ pkgs ? import <nixpkgs> {} }:

with pkgs;

mkShell {
  name = "nervesShell";
  buildInputs = [
    autoconf
    automake
    curl
    erlangR25
    fwup
    git
    pkgs.beam.packages.erlangR25.elixir
    rebar3
    squashfsTools
    x11_ssh_askpass
    pkg-config
  ];
  shellHook = ''
    SUDO_ASKPASS=${pkgs.x11_ssh_askpass}/libexec/x11-ssh-askpass
  '';
}

I get the following errors:

~/D/D/insta_billboard [1]> nix-shell default.nix 
error: Package ‘x11-ssh-askpass-1.2.4.1’ in /nix/store/1x89jxh81wyh2ngc18ny0figv9lkb0my-nixpkgs/nixpkgs/pkgs/tools/networking/x11-ssh-askpass/default.nix:30 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: For `nix shell`, `nix build`, `nix develop` or any other Nix 2.4+
        (Flake) command, `--impure` must be passed in order to read this
        environment variable.

       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.
(use '--show-trace' to show detailed location information)
~/D/D/insta_billboard [1]> export NIXPKGS_ALLOW_BROKEN=1
~/D/D/insta_billboard> nix-shell default.nix
these 2 derivations will be built:
  /nix/store/bz6z2h9h0bap02rv1j33yfxvj2q2ksnk-elixir-1.13.4.drv
  /nix/store/qzwi89imacw90ccihrfyr62f4m34c4z2-x11-ssh-askpass-1.2.4.1.drv
these 85 paths will be fetched (86.61 MiB download, 506.77 MiB unpacked):
  /nix/store/06nq0w4f8dg9jvybs57yrr2180hfirdf-zstd-1.5.2-dev
  /nix/store/0abkg7g6crfzjn6n9bv09h6pr7b39rq5-c-ares-1.18.1
  /nix/store/0mzw3caf9jwz1wrsg4f412mmxkrhpn7w-hook
  /nix/store/0n24b06x2brlqgk0s41qm0dd4iysz885-x11-ssh-askpass-1.2.4.1.tar.gz
  /nix/store/15w3ybql6xynyixw3j7pja9pvin99jl3-perl5.36.0-libwww-perl-6.67
  /nix/store/1x4gyddm54853ndv54v6b3rbvk3rp2y3-pkg-config-wrapper-0.29.2
  /nix/store/24hd4g9gs48jxchr5xx61c4g80sy0b63-curl-7.86.0-dev
  /nix/store/2anmjk732z9byhym2dr3crnixcv9rvvb-perl5.36.0-Net-HTTP-6.19
  /nix/store/2cdxfs87d522qan7xswmdwv3rxcmvhm6-perl5.36.0-LWP-MediaTypes-6.04
  /nix/store/2mz1jj659chfsspnj6bf87y2khi8ylbl-zstd-1.5.2-bin
  /nix/store/2qchmvg23fziqn19rj80b4wwbqyaszng-perl5.36.0-CGI-4.51
  /nix/store/324h3rg19wxqwm08z3678slbp6si6zbr-perl5.36.0-HTML-Parser-3.75
  /nix/store/3sixc33xj6wbjd3zqd5y1m1cbfhj2j2s-python3-3.10.9
  /nix/store/42kk38fr64cpc9hvqa77vszb468fna6a-perl5.36.0-HTTP-Date-6.05
  /nix/store/49n6zv1cnfh4qnmqp3m53k8vabcdijl8-libXt-1.2.1-dev
  /nix/store/4d5jcn5jvng448b56znrpl6n4p3gh0nm-brotli-1.0.9
  /nix/store/4fjjxf19nmph5qf5r2y546j5nxk4ci6w-openssl-3.0.7
  /nix/store/4fm022jvmdlfjyfsdwz1xz8j7mimnabm-git-2.38.1
  /nix/store/5lg5fx9jddq27r9kq4r4k1i3kh6qlqya-perl5.36.0-WWW-RobotRules-6.02
  /nix/store/6fbzrfvkwd1pcvrpm1fr3s65icbrfpyx-perl5.36.0-FCGI-0.79
  /nix/store/6i7rixaq9k09d8k3lw4g245alnmgczyv-openssl-3.0.7-bin
  /nix/store/6kxfzm6dwpak0ayncrnfz5wx5aqya6r1-xorgproto-2021.5
  /nix/store/7bssg9isjimkadgs1ldzn9kmv5nr966y-automake-1.16.5
  /nix/store/80q2fvxng4020illmh9885x2d1fmahdl-perl-5.36.0
  /nix/store/9qibrh1m3x4l93ismpyi2sj4kdwfzbbb-perl5.36.0-TimeDate-2.33
  /nix/store/a078wn5b4gbyc2khz5lhrz5ayhzr8v2l-libICE-1.0.10
  /nix/store/az8kbcj9h774ag4l9fifx8p6413cabvn-nghttp2-1.49.0-bin
  /nix/store/bjl2147sbq8vjv317fggyh41yx3hqdbm-libidn2-2.3.2-bin
  /nix/store/bl1v1b7fakv248lz8hmkw7y296895vwv-libev-4.33
  /nix/store/bnyc57p73fmp6jk9mcq367jzhjn1d8cn-pkg-config-0.29.2
  /nix/store/bqsj09dq1cl1ivkigmafmxyx15wkzzgj-libconfuse-3.3
  /nix/store/bv3fzf5g3bdjq7zqzc46xknsxy4h0cnq-gnum4-1.4.19
  /nix/store/bwnh3s218z6imnbydilkq7w3yslylgc9-source
  /nix/store/cd508csaz93jgysi54056i3mshxasjd8-perl5.36.0-Encode-Locale-1.05
  /nix/store/cp8w9sd0xadryq2qqkmvcird2p3s4sq9-fwup-1.9.1
  /nix/store/dljzajdq589id89i0a7ypdl9bhiicwg0-hook
  /nix/store/dlnv7pp36z65s249x559kd83n2dk24ws-perl5.36.0-CGI-Fast-2.15
  /nix/store/dza42p65q4f871k77g49n59z8af4r3sc-perl5.36.0-HTTP-Message-6.26
  /nix/store/f86lpyhxax32k5w1k81c8z27bfvxps2x-unzip-6.0
  /nix/store/fbcngdspjp5rx7287i05vw9if5g5sjv2-git-2.38.1-doc
  /nix/store/fzw2brnqf2g80i81ilbkyppgzp1zsm5j-perl5.36.0-File-Listing-6.14
  /nix/store/g68xc22yyp74pkl6r70873ahl39n6p01-perl5.36.0-IO-HTML-1.004
  /nix/store/gp8riwg2k6rv8fhmb4i1jg2zaq23q536-xorg-cf-files-1.0.7
  /nix/store/gz0fkz3c127am5n5s4w77fdjd10y377m-erlang-25.1.2
  /nix/store/h4nv0fl1y1d3y9zmbqa8ipirj8h20rvd-libX11-1.8.1
  /nix/store/i6jgil3y6pdbgi29vrsz8frg0y4d02lp-curl-7.86.0-man
  /nix/store/ixnjy9qr7721f8m8mbwgajhwhgwgf6iy-perl5.36.0-TermReadKey-2.38
  /nix/store/izdhavryai2fl6rvawhkzzw5wapwp9jz-tradcpp-0.5.2
  /nix/store/jj47qwsrchynz5pfyc6m42k9m9v1rpnn-perl5.36.0-HTTP-Cookies-6.09
  /nix/store/kbpsm4b7kyk4vaw2803c2h6dnahn33ds-perl5.36.0-URI-5.05
  /nix/store/kg09yj9rg3plysqmcjb0c2b3l75lwc5d-gdbm-1.23
  /nix/store/l3rx8r560hd4qg3ylh67j3c6jl87ysrm-perl5.36.0-FCGI-ProcManager-0.28
  /nix/store/lw5wqmw4n4icxgiqp57dnbkwbjn01kfx-perl5.36.0-HTTP-Negotiate-6.01
  /nix/store/lygy6a5ljbyy6rk9xhy57h6p2vv41qx2-nghttp2-1.49.0
  /nix/store/m4bi5pcpgjzxv6icnncffyqgm1vg32cf-nghttp2-1.49.0-dev
  /nix/store/mq41impkvjbng4spzr8xqx2j1hr6cqj6-imake-1.0.8
  /nix/store/n5179nw4ib0jzbfgw7phbswawgzczibj-libXau-1.0.9
  /nix/store/njych6rqwjv4qp9rp1791d1hs6qrxzbf-libxcb-1.14-dev
  /nix/store/nl6w48s4xv3p62ysl080jg38hxkxrqsi-libxcrypt-4.4.33
  /nix/store/nvqq53gbyr4rx4qvgakmg3jnrwgnjiap-libidn2-2.3.2-dev
  /nix/store/pb8ki1b46mskkg4ks42vkmpi78rnp2ry-zip-3.0
  /nix/store/pfl7kczvddlpckni5hwm8i1hilx4s2nv-lz4-1.9.4
  /nix/store/pssk6lcs4lihsihryyklnzw8rqdwnwj0-autoconf-2.71
  /nix/store/r5dw2ydvgbka2gifv4y8d5d40x2gsb79-libssh2-1.10.0-dev
  /nix/store/rajzq10zxi3n4rjv0f5ld6jslvya4h4l-sqlite-3.40.0
  /nix/store/ri30iji3qrg5sqr6cl2fjkqa5482cn3m-squashfs-4.5.1
  /nix/store/s685ib8g0jap49iclib29p97hynhslip-perl5.36.0-HTML-Tagset-3.20
  /nix/store/sypk0a1ms49ay0cnipbahpc020jcn58n-libkrb5-1.20-dev
  /nix/store/v68z49acirkr8m1k2nrwghyiz324p9dh-openssl-3.0.7-dev
  /nix/store/vn58xy8kcs3bqz2z3qz2jrl0znqgx1wl-libarchive-3.6.1-lib
  /nix/store/wc1lxyr7a4xlkff9ggib5bphwm7ncrn3-libSM-1.2.3-dev
  /nix/store/wfql2y06cc262sab2l2xfz1cyxl2pm7g-libX11-1.8.1-dev
  /nix/store/x06gflwn46pxw73x3x5wz49hxm9r7rs6-libSM-1.2.3
  /nix/store/x8i5safwnzd6zn54gap5hgiwkyf2bh91-libICE-1.0.10-dev
  /nix/store/x9gyqlh3fj35xhrdad18jp6ynz20y867-perl5.36.0-Try-Tiny-0.30
  /nix/store/xl3pdp473c25jy0n201b4xvxlncyr3l5-libXt-1.2.1
  /nix/store/xmya4kpz3d07g0kcmb8p8cbfpwb4nhlj-libxml2-2.10.3
  /nix/store/xnnn0ks294qhbvbzy19y72sf52fy4031-libxcb-1.14
  /nix/store/xsjv479s3h3999bb0jvibj8i3kx5pz0c-brotli-1.0.9-dev
  /nix/store/xwg9fgc5wjnxan3iw4wk541nwpbn2jf5-lzo-2.10
  /nix/store/xyrkma825hrv7m4bblg4xsqm0s7cyjh2-rebar3-3.20.0
  /nix/store/ymbw1ps3nf56ww5yjrxx0ixhky5z7ark-gccmakedep-1.0.3
  /nix/store/z622zi4j8n5cjwkp3nvvzxyzpivvy8wk-libXdmcp-1.1.3
  /nix/store/zd2y49wb14bq1ympsz2r5vpifa5bv7zl-perl5.36.0-HTML-TagCloud-0.38
  /nix/store/znbipr33nxyy4qq3xzbfgs68v0p7x6iw-zlib-1.2.13-dev
copying path '/nix/store/i6jgil3y6pdbgi29vrsz8frg0y4d02lp-curl-7.86.0-man' from 'https://cache.nixos.org'...
copying path '/nix/store/4d5jcn5jvng448b56znrpl6n4p3gh0nm-brotli-1.0.9' from 'https://cache.nixos.org'...
copying path '/nix/store/0abkg7g6crfzjn6n9bv09h6pr7b39rq5-c-ares-1.18.1' from 'https://cache.nixos.org'...
copying path '/nix/store/xsjv479s3h3999bb0jvibj8i3kx5pz0c-brotli-1.0.9-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/gz0fkz3c127am5n5s4w77fdjd10y377m-erlang-25.1.2' from 'https://cache.nixos.org'...
copying path '/nix/store/ymbw1ps3nf56ww5yjrxx0ixhky5z7ark-gccmakedep-1.0.3' from 'https://cache.nixos.org'...
copying path '/nix/store/kg09yj9rg3plysqmcjb0c2b3l75lwc5d-gdbm-1.23' from 'https://cache.nixos.org'...
copying path '/nix/store/fbcngdspjp5rx7287i05vw9if5g5sjv2-git-2.38.1-doc' from 'https://cache.nixos.org'...
copying path '/nix/store/bv3fzf5g3bdjq7zqzc46xknsxy4h0cnq-gnum4-1.4.19' from 'https://cache.nixos.org'...
copying path '/nix/store/0mzw3caf9jwz1wrsg4f412mmxkrhpn7w-hook' from 'https://cache.nixos.org'...
copying path '/nix/store/a078wn5b4gbyc2khz5lhrz5ayhzr8v2l-libICE-1.0.10' from 'https://cache.nixos.org'...
copying path '/nix/store/dljzajdq589id89i0a7ypdl9bhiicwg0-hook' from 'https://cache.nixos.org'...
copying path '/nix/store/x8i5safwnzd6zn54gap5hgiwkyf2bh91-libICE-1.0.10-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/x06gflwn46pxw73x3x5wz49hxm9r7rs6-libSM-1.2.3' from 'https://cache.nixos.org'...
copying path '/nix/store/n5179nw4ib0jzbfgw7phbswawgzczibj-libXau-1.0.9' from 'https://cache.nixos.org'...
copying path '/nix/store/wc1lxyr7a4xlkff9ggib5bphwm7ncrn3-libSM-1.2.3-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/z622zi4j8n5cjwkp3nvvzxyzpivvy8wk-libXdmcp-1.1.3' from 'https://cache.nixos.org'...
copying path '/nix/store/bqsj09dq1cl1ivkigmafmxyx15wkzzgj-libconfuse-3.3' from 'https://cache.nixos.org'...
copying path '/nix/store/bl1v1b7fakv248lz8hmkw7y296895vwv-libev-4.33' from 'https://cache.nixos.org'...
copying path '/nix/store/bjl2147sbq8vjv317fggyh41yx3hqdbm-libidn2-2.3.2-bin' from 'https://cache.nixos.org'...
copying path '/nix/store/sypk0a1ms49ay0cnipbahpc020jcn58n-libkrb5-1.20-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/nvqq53gbyr4rx4qvgakmg3jnrwgnjiap-libidn2-2.3.2-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/r5dw2ydvgbka2gifv4y8d5d40x2gsb79-libssh2-1.10.0-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/xnnn0ks294qhbvbzy19y72sf52fy4031-libxcb-1.14' from 'https://cache.nixos.org'...
copying path '/nix/store/nl6w48s4xv3p62ysl080jg38hxkxrqsi-libxcrypt-4.4.33' from 'https://cache.nixos.org'...
copying path '/nix/store/h4nv0fl1y1d3y9zmbqa8ipirj8h20rvd-libX11-1.8.1' from 'https://cache.nixos.org'...
copying path '/nix/store/njych6rqwjv4qp9rp1791d1hs6qrxzbf-libxcb-1.14-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/xl3pdp473c25jy0n201b4xvxlncyr3l5-libXt-1.2.1' from 'https://cache.nixos.org'...
copying path '/nix/store/xmya4kpz3d07g0kcmb8p8cbfpwb4nhlj-libxml2-2.10.3' from 'https://cache.nixos.org'...
copying path '/nix/store/pfl7kczvddlpckni5hwm8i1hilx4s2nv-lz4-1.9.4' from 'https://cache.nixos.org'...
copying path '/nix/store/vn58xy8kcs3bqz2z3qz2jrl0znqgx1wl-libarchive-3.6.1-lib' from 'https://cache.nixos.org'...
copying path '/nix/store/xwg9fgc5wjnxan3iw4wk541nwpbn2jf5-lzo-2.10' from 'https://cache.nixos.org'...
copying path '/nix/store/lygy6a5ljbyy6rk9xhy57h6p2vv41qx2-nghttp2-1.49.0' from 'https://cache.nixos.org'...
copying path '/nix/store/4fjjxf19nmph5qf5r2y546j5nxk4ci6w-openssl-3.0.7' from 'https://cache.nixos.org'...
copying path '/nix/store/az8kbcj9h774ag4l9fifx8p6413cabvn-nghttp2-1.49.0-bin' from 'https://cache.nixos.org'...
copying path '/nix/store/80q2fvxng4020illmh9885x2d1fmahdl-perl-5.36.0' from 'https://cache.nixos.org'...
copying path '/nix/store/m4bi5pcpgjzxv6icnncffyqgm1vg32cf-nghttp2-1.49.0-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/pssk6lcs4lihsihryyklnzw8rqdwnwj0-autoconf-2.71' from 'https://cache.nixos.org'...
copying path '/nix/store/7bssg9isjimkadgs1ldzn9kmv5nr966y-automake-1.16.5' from 'https://cache.nixos.org'...
copying path '/nix/store/6i7rixaq9k09d8k3lw4g245alnmgczyv-openssl-3.0.7-bin' from 'https://cache.nixos.org'...
copying path '/nix/store/cd508csaz93jgysi54056i3mshxasjd8-perl5.36.0-Encode-Locale-1.05' from 'https://cache.nixos.org'...
copying path '/nix/store/v68z49acirkr8m1k2nrwghyiz324p9dh-openssl-3.0.7-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/6fbzrfvkwd1pcvrpm1fr3s65icbrfpyx-perl5.36.0-FCGI-0.79' from 'https://cache.nixos.org'...
copying path '/nix/store/l3rx8r560hd4qg3ylh67j3c6jl87ysrm-perl5.36.0-FCGI-ProcManager-0.28' from 'https://cache.nixos.org'...
copying path '/nix/store/zd2y49wb14bq1ympsz2r5vpifa5bv7zl-perl5.36.0-HTML-TagCloud-0.38' from 'https://cache.nixos.org'...
copying path '/nix/store/s685ib8g0jap49iclib29p97hynhslip-perl5.36.0-HTML-Tagset-3.20' from 'https://cache.nixos.org'...
copying path '/nix/store/g68xc22yyp74pkl6r70873ahl39n6p01-perl5.36.0-IO-HTML-1.004' from 'https://cache.nixos.org'...
copying path '/nix/store/2cdxfs87d522qan7xswmdwv3rxcmvhm6-perl5.36.0-LWP-MediaTypes-6.04' from 'https://cache.nixos.org'...
copying path '/nix/store/ixnjy9qr7721f8m8mbwgajhwhgwgf6iy-perl5.36.0-TermReadKey-2.38' from 'https://cache.nixos.org'...
copying path '/nix/store/9qibrh1m3x4l93ismpyi2sj4kdwfzbbb-perl5.36.0-TimeDate-2.33' from 'https://cache.nixos.org'...
copying path '/nix/store/x9gyqlh3fj35xhrdad18jp6ynz20y867-perl5.36.0-Try-Tiny-0.30' from 'https://cache.nixos.org'...
copying path '/nix/store/42kk38fr64cpc9hvqa77vszb468fna6a-perl5.36.0-HTTP-Date-6.05' from 'https://cache.nixos.org'...
copying path '/nix/store/kbpsm4b7kyk4vaw2803c2h6dnahn33ds-perl5.36.0-URI-5.05' from 'https://cache.nixos.org'...
copying path '/nix/store/fzw2brnqf2g80i81ilbkyppgzp1zsm5j-perl5.36.0-File-Listing-6.14' from 'https://cache.nixos.org'...
copying path '/nix/store/dza42p65q4f871k77g49n59z8af4r3sc-perl5.36.0-HTTP-Message-6.26' from 'https://cache.nixos.org'...
copying path '/nix/store/2anmjk732z9byhym2dr3crnixcv9rvvb-perl5.36.0-Net-HTTP-6.19' from 'https://cache.nixos.org'...
copying path '/nix/store/324h3rg19wxqwm08z3678slbp6si6zbr-perl5.36.0-HTML-Parser-3.75' from 'https://cache.nixos.org'...
copying path '/nix/store/jj47qwsrchynz5pfyc6m42k9m9v1rpnn-perl5.36.0-HTTP-Cookies-6.09' from 'https://cache.nixos.org'...
copying path '/nix/store/2qchmvg23fziqn19rj80b4wwbqyaszng-perl5.36.0-CGI-4.51' from 'https://cache.nixos.org'...
copying path '/nix/store/lw5wqmw4n4icxgiqp57dnbkwbjn01kfx-perl5.36.0-HTTP-Negotiate-6.01' from 'https://cache.nixos.org'...
copying path '/nix/store/dlnv7pp36z65s249x559kd83n2dk24ws-perl5.36.0-CGI-Fast-2.15' from 'https://cache.nixos.org'...
copying path '/nix/store/5lg5fx9jddq27r9kq4r4k1i3kh6qlqya-perl5.36.0-WWW-RobotRules-6.02' from 'https://cache.nixos.org'...
copying path '/nix/store/bnyc57p73fmp6jk9mcq367jzhjn1d8cn-pkg-config-0.29.2' from 'https://cache.nixos.org'...
copying path '/nix/store/15w3ybql6xynyixw3j7pja9pvin99jl3-perl5.36.0-libwww-perl-6.67' from 'https://cache.nixos.org'...
copying path '/nix/store/1x4gyddm54853ndv54v6b3rbvk3rp2y3-pkg-config-wrapper-0.29.2' from 'https://cache.nixos.org'...
copying path '/nix/store/xyrkma825hrv7m4bblg4xsqm0s7cyjh2-rebar3-3.20.0' from 'https://cache.nixos.org'...
copying path '/nix/store/bwnh3s218z6imnbydilkq7w3yslylgc9-source' from 'https://cache.nixos.org'...
copying path '/nix/store/rajzq10zxi3n4rjv0f5ld6jslvya4h4l-sqlite-3.40.0' from 'https://cache.nixos.org'...
copying path '/nix/store/ri30iji3qrg5sqr6cl2fjkqa5482cn3m-squashfs-4.5.1' from 'https://cache.nixos.org'...
copying path '/nix/store/3sixc33xj6wbjd3zqd5y1m1cbfhj2j2s-python3-3.10.9' from 'https://cache.nixos.org'...
copying path '/nix/store/izdhavryai2fl6rvawhkzzw5wapwp9jz-tradcpp-0.5.2' from 'https://cache.nixos.org'...
copying path '/nix/store/4fm022jvmdlfjyfsdwz1xz8j7mimnabm-git-2.38.1' from 'https://cache.nixos.org'...
copying path '/nix/store/f86lpyhxax32k5w1k81c8z27bfvxps2x-unzip-6.0' from 'https://cache.nixos.org'...
copying path '/nix/store/0n24b06x2brlqgk0s41qm0dd4iysz885-x11-ssh-askpass-1.2.4.1.tar.gz' from 'https://cache.nixos.org'...
copying path '/nix/store/gp8riwg2k6rv8fhmb4i1jg2zaq23q536-xorg-cf-files-1.0.7' from 'https://cache.nixos.org'...
copying path '/nix/store/6kxfzm6dwpak0ayncrnfz5wx5aqya6r1-xorgproto-2021.5' from 'https://cache.nixos.org'...
copying path '/nix/store/mq41impkvjbng4spzr8xqx2j1hr6cqj6-imake-1.0.8' from 'https://cache.nixos.org'...
copying path '/nix/store/wfql2y06cc262sab2l2xfz1cyxl2pm7g-libX11-1.8.1-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/pb8ki1b46mskkg4ks42vkmpi78rnp2ry-zip-3.0' from 'https://cache.nixos.org'...
copying path '/nix/store/49n6zv1cnfh4qnmqp3m53k8vabcdijl8-libXt-1.2.1-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/cp8w9sd0xadryq2qqkmvcird2p3s4sq9-fwup-1.9.1' from 'https://cache.nixos.org'...
copying path '/nix/store/znbipr33nxyy4qq3xzbfgs68v0p7x6iw-zlib-1.2.13-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/2mz1jj659chfsspnj6bf87y2khi8ylbl-zstd-1.5.2-bin' from 'https://cache.nixos.org'...
copying path '/nix/store/06nq0w4f8dg9jvybs57yrr2180hfirdf-zstd-1.5.2-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/24hd4g9gs48jxchr5xx61c4g80sy0b63-curl-7.86.0-dev' from 'https://cache.nixos.org'...
building '/nix/store/qzwi89imacw90ccihrfyr62f4m34c4z2-x11-ssh-askpass-1.2.4.1.drv'...
unpacking sources
unpacking source archive /nix/store/0n24b06x2brlqgk0s41qm0dd4iysz885-x11-ssh-askpass-1.2.4.1.tar.gz
source root is x11-ssh-askpass-1.2.4.1
setting SOURCE_DATE_EPOCH to timestamp 1000712570 of file x11-ssh-askpass-1.2.4.1/x11-ssh-askpass.man.in
patching sources
updateAutotoolsGnuConfigScriptsPhase
configuring
configure flags: --prefix=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1 --bindir=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/bin --sbindir=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/sbin --includedir=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/include --oldincludedir=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/include --mandir=/nix/store/10zrj96jkvcwa6by4s6p3g7sb390kldq-x11-ssh-askpass-1.2.4.1-man/share/man --infodir=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/share/info --docdir=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/share/doc/x11-ssh-askpass --libdir=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/lib --libexecdir=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/libexec --localedir=/nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/share/locale --with-app-defaults-dir=\$out/etc/X11/app-defaults

x11-ssh-askpass has been configured with the following options:

                  Askpass directory: /nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/libexec
                        Manual page: /nix/store/10zrj96jkvcwa6by4s6p3g7sb390kldq-x11-ssh-askpass-1.2.4.1-man/share/man/man1
          Application defaults file: SshAskpass-default.ad
     Application defaults directory: /nix/store/db461nkx9cz14baw6xym1q9czkkkp7l7-x11-ssh-askpass-1.2.4.1/etc/X11/app-defaults
  Install application defaults file: yes

        Compiler: clang
  Compiler flags: default
    Linker flags: default

You may now create the Makefile and build x11-ssh-askpass using the
following commands:

        xmkmf
        make includes
        make

imake -DUseInstalled -I/nix/store/mq41impkvjbng4spzr8xqx2j1hr6cqj6-imake-1.0.8/lib/X11/config
make Makefiles
make: Nothing to be done for 'Makefiles'.
make includes
ln -s SshAskpass-default.ad SshAskpass.ad
sed -n '/^[^!]/s/.*/"&",/p' <SshAskpass.ad >SshAskpass_ad.h.tmp
mv -f SshAskpass_ad.h.tmp SshAskpass_ad.h
make depend
gccmakedep  --   -I/nix/store/gp8riwg2k6rv8fhmb4i1jg2zaq23q536-xorg-cf-files-1.0.7/include    DarwinMachineDefines -D__DARWIN__                                 -DNO_ALLOCA -DCSRG_BASED         -- drawing.c dynlist.c resources.c x11-ssh-askpass.c
building
build flags: SHELL=/nix/store/x380x9d7gqh4ig9h50a7wx08p0s6622f-bash-5.1-p16/bin/bash
clang -O -Wall -Wpointer-arith -no-cpp-precomp     -I/nix/store/gp8riwg2k6rv8fhmb4i1jg2zaq23q536-xorg-cf-files-1.0.7/include    DarwinMachineDefines -D__DARWIN__                                 -DNO_ALLOCA -DCSRG_BASED          -c -o drawing.o drawing.c
clang-11: error: no such file or directory: 'DarwinMachineDefines'
make: *** [<builtin>: drawing.o] Error 1
error: builder for '/nix/store/qzwi89imacw90ccihrfyr62f4m34c4z2-x11-ssh-askpass-1.2.4.1.drv' failed with exit code 2;
       last 10 log lines:
       > ln -s SshAskpass-default.ad SshAskpass.ad
       > sed -n '/^[^!]/s/.*/"&",/p' <SshAskpass.ad >SshAskpass_ad.h.tmp
       > mv -f SshAskpass_ad.h.tmp SshAskpass_ad.h
       > make depend
       > gccmakedep  --   -I/nix/store/gp8riwg2k6rv8fhmb4i1jg2zaq23q536-xorg-cf-files-1.0.7/include    DarwinMachineDefines -D__DARWIN__                                 -DNO_ALLOCA -DCSRG_BASED         -- drawing.c dynlist.c resources.c x11-ssh-askpass.c
       > building
       > build flags: SHELL=/nix/store/x380x9d7gqh4ig9h50a7wx08p0s6622f-bash-5.1-p16/bin/bash
       > clang -O -Wall -Wpointer-arith -no-cpp-precomp     -I/nix/store/gp8riwg2k6rv8fhmb4i1jg2zaq23q536-xorg-cf-files-1.0.7/include    DarwinMachineDefines -D__DARWIN__                                 -DNO_ALLOCA -DCSRG_BASED          -c -o drawing.o drawing.c
       > clang-11: error: no such file or directory: 'DarwinMachineDefines'
       > make: *** [<builtin>: drawing.o] Error 1
       For full logs, run 'nix log /nix/store/qzwi89imacw90ccihrfyr62f4m34c4z2-x11-ssh-askpass-1.2.4.1.drv'.
error: build of '/nix/store/bz6z2h9h0bap02rv1j33yfxvj2q2ksnk-elixir-1.13.4.drv', '/nix/store/qzwi89imacw90ccihrfyr62f4m34c4z2-x11-ssh-askpass-1.2.4.1.drv' failed

[fhunleth]

Thanks for letting us know about this!

x11_ssh_askpass isn't needed on MacOS. I'm not a Nix user, but I'm told that making the x11_ssh_askpass conditional like in https://github.com/ceedubs/unison-nix/blob/e00ad743c77174714d1ebbcacf9b8e63cc7f9554/flake.nix#L36 is the way to fix this.

If that makes sense to you and you can test, could you either send a PR or let me know the update you made here so I can fix the docs?

[simonelnahas]

Thanks!

Would love to test it, although I'm not sure exactly how to incorporate that code snippet you linked into the nix-shell file.

[garrettmichaelgeorge]

Hi @simonelnahas, are you by chance running macOS on a recent aarch64 architecture (M1 or M2)? It looks like x11_ssh_askpass was previously marked as broken on aarch64-darwin, but the "broken" label was removed in NixOS/nixpkgs#207321 after the package was verified to build on that architecture.

If x11_ssh_askpass is still showing as broken (or actually breaking when building locally), then the local version of nixpkgs (referenced by import <nixpkgs> in the example) probably needs to be updated.

Depending on your preferences for using Nix, a couple ways to update that nixpkgs version are:

1. Pin the nixpkgs version at the top of shell.nix (see the pinning nixpkgs tutorial or this reference). The following pins it to the most recent commit on nixpkgs-unstable as of now:

{ pkgs ? import (fetchTarball "https://github.com/nixos/nixpkgs/archive/0a4206a51b386e5cda731e8ac78d76ad924c7125.tar.gz") {}
}:

2. Use a Nix flake. Flakes store the nixpkgs version in a lockfile and were invented in part to make this easier.

Let me know if bumping the nixpkgs version solves the issue! If not, then conditionally including the x11_ssh_askpass could also work, since it sounds like it is not needed anyway on macOS (no if/then statement needed):

{
  # ...
  buildInputs = [
    autoconf
    automake
    curl
    erlangR25
    fwup
    git
    pkgs.beam.packages.erlangR25.elixir
    rebar3
    squashfsTools
    pkg-config
  ] ++ lib.optionals stdenv.isLinux [ x11_ssh_askpass ];
  # ...
}