system info

Computer Information:
    Manufacturer:  Unknown
    Model:  Unknown
    Form Factor: Desktop
    No Touch Input Detected

Processor Information:
    CPU Vendor:  AuthenticAMD
    CPU Brand:  AMD Ryzen 9 3900X 12-Core Processor            
    CPU Family:  0x17
    CPU Model:  0x71
    CPU Stepping:  0x0
    CPU Type:  0x0
    Speed:  3900 Mhz
    24 logical processors
    12 physical processors
    HyperThreading:  Supported
    FCMOV:  Supported
    SSE2:  Supported
    SSE3:  Supported
    SSSE3:  Supported
    SSE4a:  Supported
    SSE41:  Supported
    SSE42:  Supported
    AES:  Supported
    AVX:  Supported
    AVX2:  Unsupported
    AVX512F:  Unsupported
    AVX512PF:  Unsupported
    AVX512ER:  Unsupported
    AVX512CD:  Unsupported
    AVX512VNNI:  Unsupported
    SHA:  Unsupported
    CMPXCHG16B:  Supported
    LAHF/SAHF:  Supported
    PrefetchW:  Unsupported

Operating System Version:
    "NixOS 20.09 (Nightingale)" (64 bit)
    Kernel Name:  Linux
    Kernel Version:  5.6.19
    X Server Vendor:  The X.Org Foundation
    X Server Release:  12008000
    X Window Manager:  i3
    Steam Runtime Version:  <Runtime enabled>

Video Card:
    Driver:  NVIDIA Corporation GeForce GTX 1070/PCIe/SSE2
    Driver Version:  4.6.0 NVIDIA 450.57
    OpenGL Version: 4.6
    Desktop Color Depth: 24 bits per pixel
    Monitor Refresh Rate: 60 Hz
    VendorID:  0x10de
    DeviceID:  0x1b81
    Revision Not Detected
    Number of Monitors:  2
    Number of Logical Video Cards:  1
    Primary Display Resolution:  1920 x 1080
    Desktop Resolution: 5760 x 2160
    Primary Display Size: 18.74" x 10.55" (21.50" diag)
                                            47.6cm x 26.8cm (54.6cm diag)
    Primary Bus: PCI Express 16x
    Primary VRAM: 8192 MB
    Supported MSAA Modes:  2x 4x 8x 16x 

Sound card:
    Audio device: Nvidia GPU 83 HDMI/DP

Memory:
    RAM:  32097 Mb

VR Hardware:
    VR Headset: None detected

Miscellaneous:
    UI Language:  English
    LANG:  en_US.UTF-8
    Total Hard Disk Space Available:  937368 Mb
    Largest Free Hard Disk Block:  495088 Mb

Steam Linux Runtime Information:
{
  "can-write-uinput" : false,
  "steam-installation" : {
    "path" : "/home/jon/.local/share/Steam",
    "data_path" : "/home/jon/.local/share/Steam",
    "issues" : [
      "unexpected-steam-uri-handler"
    ]
  },
  "runtime" : {
    "path" : "/steamrt",
    "version" : null,
    "issues" : [
      "not-runtime",
      "unexpected-location",
      "not-in-path",
      "not-using-newer-host-libraries"
    ],
    "pinned_libs_32" : {
      "messages" : [
        "find: ‘pinned_libs_32’: No such file or directory"
      ]
    },
    "pinned_libs_64" : {
      "messages" : [
        "find: ‘pinned_libs_64’: No such file or directory"
      ]
    }
  },
  "os-release" : {
    "id" : "nixos",
    "name" : "NixOS",
    "pretty_name" : "NixOS 20.09 (Nightingale)",
    "version_id" : "20.09pre237004.76f2e271a2e",
    "version_codename" : "nightingale"
  },
  "container" : {
    "type" : "none"
  },
  "driver_environment" : [
  ],
  "architectures" : {
    "i386-linux-gnu" : {
      "can-run" : true,
      "library-issues-summary" : [
        "unknown-expectations"
      ],
      "graphics-details" : {
        "x11/vulkan" : {
          "messages" : "ERROR: [Loader Message] Code 0 : /home/jon/.local/share/Steam/ubuntu12_64/steamoverlayvulkanlayer.so: wrong ELF class: ELFCLASS64\n",
          "renderer" : "GeForce GTX 1070",
          "version" : "1.2.133 (device 10de:1b81) (driver 450.228.0)"
        },
        "glx/gl" : {
          "renderer" : "GeForce GTX 1070/PCIe/SSE2",
          "version" : "4.6.0 NVIDIA 450.57",
          "library-vendor" : "glvnd"
        },
        "egl_x11/gl" : {
          "renderer" : "GeForce GTX 1070/PCIe/SSE2",
          "version" : "4.6.0 NVIDIA 450.57",
          "library-vendor" : "glvnd"
        },
        "egl_x11/glesv2" : {
          "renderer" : "GeForce GTX 1070/PCIe/SSE2",
          "version" : "OpenGL ES 3.2 NVIDIA 450.57",
          "library-vendor" : "glvnd"
        }
      },
      "dri_drivers" : [
      ],
      "va-api_drivers" : [
        {
          "library_path" : "/nix/store/7rskpp74p36lyksr692m0lzas45mvm2b-libva-1.7.3/lib/dri/dummy_drv_video.so"
        }
      ],
      "vdpau_drivers" : [
      ],
      "glx_drivers" : [
      ]
    },
    "x86_64-linux-gnu" : {
      "can-run" : true,
      "library-issues-summary" : [
        "unknown-expectations"
      ],
      "graphics-details" : {
        "x11/vulkan" : {
          "messages" : "ERROR: [Loader Message] Code 0 : /home/jon/.local/share/Steam/ubuntu12_32/steamoverlayvulkanlayer.so: wrong ELF class: ELFCLASS32\n",
          "renderer" : "GeForce GTX 1070",
          "version" : "1.2.133 (device 10de:1b81) (driver 450.228.0)"
        },
        "glx/gl" : {
          "renderer" : "GeForce GTX 1070/PCIe/SSE2",
          "version" : "4.6.0 NVIDIA 450.57",
          "library-vendor" : "glvnd"
        },
        "egl_x11/gl" : {
          "renderer" : "GeForce GTX 1070/PCIe/SSE2",
          "version" : "4.6.0 NVIDIA 450.57",
          "library-vendor" : "glvnd"
        },
        "egl_x11/glesv2" : {
          "renderer" : "GeForce GTX 1070/PCIe/SSE2",
          "version" : "OpenGL ES 3.2 NVIDIA 450.57",
          "library-vendor" : "glvnd"
        }
      },
      "dri_drivers" : [
      ],
      "va-api_drivers" : [
        {
          "library_path" : "/nix/store/h40p5v9n58ski7xw3l5pnaqdrgvw66fn-libva-1.7.3/lib/dri/dummy_drv_video.so"
        }
      ],
      "vdpau_drivers" : [
      ],
      "glx_drivers" : [
      ]
    }
  },
  "locale-issues" : [
    "i18n-supported-missing",
    "i18n-locales-en-us-missing"
  ],
  "locales" : {
    "<default>" : {
      "resulting-name" : "en_US.UTF-8",
      "charset" : "UTF-8",
      "is_utf8" : true
    },
    "C" : {
      "resulting-name" : "C",
      "charset" : "ANSI_X3.4-1968",
      "is_utf8" : false
    },
    "C.UTF-8" : {
      "resulting-name" : "C.UTF-8",
      "charset" : "UTF-8",
      "is_utf8" : true
    },
    "en_US.UTF-8" : {
      "resulting-name" : "en_US.UTF-8",
      "charset" : "UTF-8",
      "is_utf8" : true
    }
  },
  "egl" : {
    "icds" : [
    ]
  },
  "vulkan" : {
    "icds" : [
    ]
  },
  "desktop-entries" : [
    {
      "id" : "steam.desktop",
      "commandline" : "/nix/store/5if0lyglcp9pxkdwpv7zrj3w6ngwl11k-steam/bin/steam %U",
      "filename" : "/home/jon//.nix-profile/share/applications/steam.desktop",
      "default_steam_uri_handler" : true,
      "steam_uri_handler" : true
    }
  ],
  "cpu-features" : {
    "x86-64" : true,
    "sse3" : true,
    "cmpxchg16b" : true
  }
}

The Steam Linux Runtime container tool is not installed.