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home-manager/modules/programs/htop.nix

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{ config, lib, pkgs, ... }:
with lib;
let
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cfg = config.programs.htop;
list = xs: concatMapStrings (x: "${toString x} ") xs;
bool = b: if b then "1" else "0";
fields = {
PID = 0;
COMM = 1;
STATE = 2;
PPID = 3;
PGRP = 4;
SESSION = 5;
TTY_NR = 6;
TPGID = 7;
MINFLT = 9;
MAJFLT = 11;
PRIORITY = 17;
NICE = 18;
STARTTIME = 20;
PROCESSOR = 37;
M_SIZE = 38;
M_RESIDENT = 39;
ST_UID = 45;
PERCENT_CPU = 46;
PERCENT_MEM = 47;
USER = 48;
TIME = 49;
NLWP = 50;
TGID = 51;
CMINFLT = 10;
CMAJFLT = 12;
UTIME = 13;
STIME = 14;
CUTIME = 15;
CSTIME = 16;
M_SHARE = 40;
M_TRS = 41;
M_DRS = 42;
M_LRS = 43;
M_DT = 44;
CTID = 99;
VPID = 100;
VXID = 102;
RCHAR = 102;
WCHAR = 103;
SYSCR = 104;
SYSCW = 105;
RBYTES = 106;
WBYTES = 107;
CNCLWB = 108;
IO_READ_RATE = 109;
IO_WRITE_RATE = 110;
IO_RATE = 111;
CGROUP = 112;
OOM = 113;
IO_PRIORITY = 114;
M_PSS = 118;
M_SWAP = 119;
M_PSSWP = 120;
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};
# Mapping from names to defaults
meters = {
Clock = 2;
LoadAverage = 2;
Load = 2;
Memory = 1;
Swap = 1;
Tasks = 2;
Uptime = 2;
Battery = 2;
Hostname = 2;
AllCPUs = 1;
AllCPUs2 = 1;
AllCPUs4 = 1;
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LeftCPUs = 1;
RightCPUs = 1;
Right = 1;
CPUs = 1;
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LeftCPUs2 = 1;
RightCPUs2 = 1;
LeftCPUs4 = 1;
RightCPUs4 = 1;
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Blank = 2;
PressureStallCPUSome = 2;
PressureStallIOSome = 2;
PressureStallIOFull = 2;
PressureStallMemorySome = 2;
PressureStallMemoryFull = 2;
ZFSARC = 2;
ZFSCARC = 2;
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CPU = 1;
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"CPU(1)" = 1;
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"CPU(2)" = 1;
"CPU(3)" = 1;
"CPU(4)" = 1;
"CPU(5)" = 1;
"CPU(6)" = 1;
"CPU(7)" = 1;
"CPU(8)" = 1;
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};
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singleMeterType = let
meterEnum = types.enum (attrNames meters);
meterSubmodule = types.submodule {
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options = {
kind = mkOption {
type = types.enum (attrNames meters);
example = "AllCPUs";
description = "What kind of meter.";
};
mode = mkOption {
type = types.enum [ 1 2 3 4 ];
example = 2;
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description =
"Which mode the meter should use, one of 1(Bar) 2(Text) 3(Graph) 4(LED).";
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};
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};
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};
in types.coercedTo meterEnum (m: {
kind = m;
mode = meters.${m};
}) meterSubmodule;
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meterType = types.submodule {
options = {
left = mkOption {
description = "Meters shown in the left header.";
default = [ "AllCPUs" "Memory" "Swap" ];
example = [
"Memory"
"LeftCPUs2"
"RightCPUs2"
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{
kind = "CPU";
mode = 3;
}
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];
type = types.listOf singleMeterType;
};
right = mkOption {
description = "Meters shown in the right header.";
default = [ "Tasks" "LoadAverage" "Uptime" ];
example = [
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{
kind = "Clock";
mode = 4;
}
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"Uptime"
"Tasks"
];
type = types.listOf singleMeterType;
};
};
};
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in {
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options.programs.htop = {
enable = mkEnableOption "htop";
fields = mkOption {
type = types.listOf (types.enum (attrNames fields));
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default = [
"PID"
"USER"
"PRIORITY"
"NICE"
"M_SIZE"
"M_RESIDENT"
"M_SHARE"
"STATE"
"PERCENT_CPU"
"PERCENT_MEM"
"TIME"
"COMM"
];
example = [
"PID"
"USER"
"PRIORITY"
"PERCENT_CPU"
"M_RESIDENT"
"PERCENT_MEM"
"TIME"
"COMM"
];
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description = "Active fields shown in the table.";
};
sortKey = mkOption {
type = types.enum (attrNames fields);
default = "PERCENT_CPU";
example = "TIME";
description = "Which field to use for sorting.";
};
sortDescending = mkOption {
type = types.bool;
default = true;
description = "Whether to sort descending or not.";
};
hideThreads = mkOption {
type = types.bool;
default = false;
description = "Hide threads.";
};
hideKernelThreads = mkOption {
type = types.bool;
default = true;
description = "Hide kernel threads.";
};
hideUserlandThreads = mkOption {
type = types.bool;
default = false;
description = "Hide userland process threads.";
};
shadowOtherUsers = mkOption {
type = types.bool;
default = false;
description = "Shadow other users' processes.";
};
showThreadNames = mkOption {
type = types.bool;
default = false;
description = "Show custom thread names.";
};
showProgramPath = mkOption {
type = types.bool;
default = true;
description = "Show program path.";
};
highlightBaseName = mkOption {
type = types.bool;
default = false;
description = "Highlight program <quote>basename</quote>.";
};
highlightMegabytes = mkOption {
type = types.bool;
default = true;
description = "Highlight large numbers in memory counters.";
};
highlightThreads = mkOption {
type = types.bool;
default = true;
description = "Display threads in a different color.";
};
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treeView = mkOption {
type = types.bool;
default = false;
description = "Tree view.";
};
headerMargin = mkOption {
type = types.bool;
default = true;
description = "Leave a margin around header.";
};
detailedCpuTime = mkOption {
type = types.bool;
default = false;
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description =
"Detailed CPU time (System/IO-Wait/Hard-IRQ/Soft-IRQ/Steal/Guest).";
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};
cpuCountFromZero = mkOption {
type = types.bool;
default = false;
description = "Count CPUs from 0 instead of 1.";
};
showCpuUsage = mkOption {
type = types.bool;
default = false;
description = "Show CPU usage frequency.";
};
showCpuFrequency = mkOption {
type = types.bool;
default = false;
description = "Show CPU frequency.";
};
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updateProcessNames = mkOption {
type = types.bool;
default = false;
description = "Update process names on every refresh.";
};
accountGuestInCpuMeter = mkOption {
type = types.bool;
default = false;
description = "Add guest time in CPU meter percentage.";
};
colorScheme = mkOption {
type = types.enum [ 0 1 2 3 4 5 6 ];
default = 0;
example = 6;
description = "Which color scheme to use.";
};
enableMouse = mkOption {
type = types.bool;
default = true;
description = "Enable mouse support.";
};
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delay = mkOption {
type = types.int;
default = 15;
example = 2;
description = "Set the delay between updates, in tenths of seconds.";
};
meters = mkOption {
description = "Meters shown in the header.";
default = {
left = [ "AllCPUs" "Memory" "Swap" ];
right = [ "Tasks" "LoadAverage" "Uptime" ];
};
example = {
left = [
"Memory"
"CPU"
"LeftCPUs2"
"RightCPUs2"
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{
kind = "CPU";
mode = 3;
}
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];
right = [
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{
kind = "Clock";
mode = 4;
}
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"Uptime"
"Tasks"
"LoadAverage"
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{
kind = "Battery";
mode = 1;
}
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];
};
type = meterType;
};
vimMode = mkOption {
type = types.bool;
default = false;
description = "Vim key bindings.";
};
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};
config = mkIf cfg.enable {
home.packages = [ pkgs.htop ];
xdg.configFile."htop/htoprc".text = let
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leftMeters = map (m: m.kind) cfg.meters.left;
leftModes = map (m: m.mode) cfg.meters.left;
rightMeters = map (m: m.kind) cfg.meters.right;
rightModes = map (m: m.mode) cfg.meters.right;
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in ''
# This file is regenerated by home-manager
# when options are changed in the config
fields=${list (map (n: fields.${n}) cfg.fields)}
sort_key=${toString (fields.${cfg.sortKey})}
sort_direction=${bool cfg.sortDescending}
hide_threads=${bool cfg.hideThreads}
hide_kernel_threads=${bool cfg.hideKernelThreads}
hide_userland_threads=${bool cfg.hideUserlandThreads}
shadow_other_users=${bool cfg.shadowOtherUsers}
show_thread_names=${bool cfg.showThreadNames}
show_program_path=${bool cfg.showProgramPath}
highlight_base_name=${bool cfg.highlightBaseName}
highlight_megabytes=${bool cfg.highlightMegabytes}
highlight_threads=${bool cfg.highlightThreads}
tree_view=${bool cfg.treeView}
header_margin=${bool cfg.headerMargin}
detailed_cpu_time=${bool cfg.detailedCpuTime}
cpu_count_from_zero=${bool cfg.cpuCountFromZero}
show_cpu_usage=${bool cfg.showCpuUsage}
show_cpu_frequency=${bool cfg.showCpuFrequency}
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update_process_names=${bool cfg.updateProcessNames}
account_guest_in_cpu_meter=${bool cfg.accountGuestInCpuMeter}
color_scheme=${toString cfg.colorScheme}
enable_mouse=${bool cfg.enableMouse}
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delay=${toString cfg.delay}
left_meters=${list leftMeters}
left_meter_modes=${list leftModes}
right_meters=${list rightMeters}
right_meter_modes=${list rightModes}
vim_mode=${bool cfg.vimMode}
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'';
};
}