# iosevka

## Iosevka Font Builder

[Adam Kruszewski blog](https://adam.kruszewski.name/)

## Step by step guide in compiling a custom Iosevka font on Ubuntu/Debian

posted on 2019-10-27

My [last post](https://adam.kruszewski.name/2017/09/iosevka/) on how to build a custom Iosevka font got completely out of date as Iosevka changed the build system and moved away from Makefiles. I thought I’ll write an update with additional step-by-step guide on how to make it work on more popular GNU/Linux distribution - Ubuntu (it is pretty straightforward on Arch or Gentoo as every dependency can be installed by distro’s package/port manager).

![2019-10-27-iosevka.png](http://adam.kruszewski.name/content/article_images/2019-10-27-iosevka.png)

*Custom Iosevka font you can have today!*

***

~~Through the whole guide I assume we’ll clone most of the repositories used inside `~/Src/opensource/` directory.~~

> ***\* EDIT \****
>
> Just use the main workspace folder in gitpod.io. For example, in this case it is `/workspace/iosevka-font-builder`

### [Install dependencies](http://adam.kruszewski.name/#org9c38113)

There are three major dependencies for building Iosevka, NodeJS/NPM and ttfautohint are available as binaries in Ubuntu/Debian repositories so it is quite easy to install them running the following from terminal:

```bash
sudo apt install nodejs npm ttfautohint libttfautohint-dev
```

### [Build and compile premake5 for otfcc](http://adam.kruszewski.name/#orgefb1083)

Otfcc requires premake5 build system to build and we need to compile it from sources:

```bash
cd /workspace/iosevka-font-builder

git clone https://github.com/premake/premake-core
cd premake-core
make -f Bootstrap.mak linux
```

### [Build otfcc](http://adam.kruszewski.name/#org914d7c9)

We’ll not install premake system-wide, just execute it from otfcc’s source directory and build otfcc’s binaries.

```bash
cd /workspace/iosevka-font-builder

git clone https://github.com/caryll/otfcc
cd otfcc
../premake-core/bin/release/premake5 gmake
cd build/gmake
make config > release_x64
```

### [Clone Iosevka repository](http://adam.kruszewski.name/#orgadcd2bb)

Now we can finally clone Iosevka’s source repository.

```bash
cd /workspace/iosevka-font-builder

git clone https://github.com/be5invis/Iosevka -o iosevka
```

### [Install nodeJs dependencies](http://adam.kruszewski.name/#org02e47f0)

Node package manager will take care of last set of dependencies needed.

```bash
cd iosevka
npm install
```

***

### [Create a custom build plan for Iosevka font](http://adam.kruszewski.name/#org7e921df)

Now create a `private-build-plans.toml` file with the contents below inside Iosevka’s source directory. You can tweak look for each of the available options - please refer to [official Iosevka readme](https://github.com/be5invis/Iosevka) to see what options are available. The ones below are what I’m using and reflect what you could see on the picture at the beginning of this post.

#### `private-build-plans.toml`

```toml
[buildPlans.iosevka-custom]
family = "Iosevka Custom"
design = [
'extended',
'ligset-coq',
'v-l-tailed',
'v-i-serifed',
'v-j-serifed',
'v-a-singlestorey',
'v-f-tailed',
'v-g-opendoublestorey',
'v-m-shortleg',
'v-t-standard',
'v-q-taily',
'v-y-curly',
'v-zero-slashed',
'v-one-hooky',
'v-three-flattop',
'v-seven-normal',
'v-tilde-high',
'v-asterisk-hexhigh',
'v-paragraph-low',
'v-caret-high',
'v-underscore-low',
'v-percent-rings',
'v-at-short',
'v-brace-curly',
'v-dollar-throughcap',
'v-numbersigh-slanted'
]
```

#### My `private-build-plans.toml`

> I put this file in the `/workspace/iosevka-font-builder` directory as well as the `/workspace/iosevka-font-builder/iosevka` directory.

```toml
[buildPlans.iosevka-chad]
family = "Iosevka Chad"
...
```

<details>

<summary>click to expand whole file</summary>

<br>

```toml
[buildPlans.iosevka-chad]
family = "Iosevka Chad"
spacing = "normal"
serifs = "slab"
no-cv-ss = false

[buildPlans.iosevka-chad.variants.design]
capital-a = "curly-base-serifed"
capital-b = "standard-interrupted-bilateral-serifed"
capital-c = "bilateral-serifed"
capital-d = "standard-bilateral-serifed"
capital-e = "serifed"
capital-g = "toothed-serifed-capped"
capital-i = "serifed"
capital-j = "descending-serifed-both-sides"
capital-k = "symmetric-connected-serifed"
capital-m = "slanted-sides-flat-bottom"
capital-n = "standard"
capital-p = "closed"
capital-q = "crossing"
capital-r = "standing-open"
capital-s = "bilateral-serifed"
capital-w = "straight-flat-top"
capital-x = "curly-serifed"
capital-z = "cursive"
i = "serifed-asymmetric"
j = "serifed"
k = "curly-top-left-and-bottom-right-serifed"
l = "serifed-flat-tailed"
m = "short-leg-top-left-and-bottom-right-serifed"
n = "tailed"
q = "diagonal-tailed"
r = "top-serifed"
t = "diagonal-tailed"
w = "straight-flat-top-motion-serifed"
y = "straight"
z = "cursive"
zero = "long-dotted"
one = "base-flat-top-serif"
two = "curly-neck"
three = "flat-top"
four = "semi-open"
five = "vertical-upper-left-bar"
six = "straight-bar"
seven = "straight-crossbar-serifed"
eight = "crossing-asymmetric"
nine = "straight-bar"
tilde = "high"
asterisk = "flip-penta-high"
caret = "high"
paren = "flat-arc"
brace = "curly-flat-boundary"
number-sign = "slanted"
ampersand = "upper-open"
at = "fourfold-tall"
dollar = "through"
cent = "through"
percent = "rings-continuous-slash-also-connected"
lig-ltgteq = "slanted"
ascii-single-quote = "straight"
ascii-grave = "straight"
question = "corner"
punctuation-dot = "round"

[buildPlans.iosevka-chad.ligations]
inherits = "dlig"
```

</details>

***

### [(optional) Add legacy support for ligatures](http://adam.kruszewski.name/#org84aef7b)

For use with Emacs. If you use an editor with Open Ligatures support (basically all of them nowadays) or are just not interested in ligatures at all - skip this step. If you want legacy ligature support built in simply append lines below to `parameters.toml` in Iosevka’s source code directory (credits goes to [Soham Chowdhury](https://gist.github.com/mrkgnao/49c7480e1df42405a36b7ab09fe87f3d)).

#### `parameters.toml`

<details>

<summary>click to expand</summary>

<br>

```toml
# -----------------------------------------
# Double-ended hyphen arrows
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57600 # 0xe100
featureTag = 'XV00'
sequence = "<->"

[[iosevka.compLig]]
unicode = 57601 # 0xe101
featureTag = 'XV00'
sequence = "<-->"

[[iosevka.compLig]]
unicode = 57602 # 0xe102
featureTag = 'XV00'
sequence = "<--->"

[[iosevka.compLig]]
unicode = 57603 # 0xe103
featureTag = 'XV00'
sequence = "<---->"

[[iosevka.compLig]]
unicode = 57604 # 0xe104
featureTag = 'XV00'
sequence = "<----->"

# -----------------------------------------
# Double-ended equals arrows
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57605 # 0xe105
featureTag = 'XV00'
sequence = "<=>"

[[iosevka.compLig]]
unicode = 57606 # 0xe106
featureTag = 'XV00'
sequence = "<==>"

[[iosevka.compLig]]
unicode = 57607 # 0xe107
featureTag = 'XV00'
sequence = "<===>"

[[iosevka.compLig]]
unicode = 57608 # 0xe108
featureTag = 'XV00'
sequence = "<====>"

[[iosevka.compLig]]
unicode = 57609 # 0xe109
featureTag = 'XV00'
sequence = "<=====>"

# -----------------------------------------
# Double-ended asterisk operators
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57610 # 0xe10a
featureTag = 'XV00'
sequence = "<**>"

[[iosevka.compLig]]
unicode = 57611 # 0xe10b
featureTag = 'XV00'
sequence = "<***>"

[[iosevka.compLig]]
unicode = 57612 # 0xe10c
featureTag = 'XV00'
sequence = "<****>"

[[iosevka.compLig]]
unicode = 57613 # 0xe10d
featureTag = 'XV00'
sequence = "<*****>"

# -----------------------------------------
# HTML comments
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57614 # 0xe10e
featureTag = 'XV00'
sequence = "<!--"

[[iosevka.compLig]]
unicode = 57615 # 0xe10f
featureTag = 'XV00'
sequence = "<!---"

# -----------------------------------------
# Three-char ops with discards
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57616 # 0xe110
featureTag = 'XV00'
sequence = "<$"

[[iosevka.compLig]]
unicode = 57617 # 0xe111
featureTag = 'XV00'
sequence = "<$>"

[[iosevka.compLig]]
unicode = 57618 # 0xe112
featureTag = 'XV00'
sequence = "$>"

[[iosevka.compLig]]
unicode = 57619 # 0xe113
featureTag = 'XV00'
sequence = "<."

[[iosevka.compLig]]
unicode = 57620 # 0xe114
featureTag = 'XV00'
sequence = "<.>"

[[iosevka.compLig]]
unicode = 57621 # 0xe115
featureTag = 'XV00'
sequence = ".>"

[[iosevka.compLig]]
unicode = 57622 # 0xe116
featureTag = 'XV00'
sequence = "<*"

[[iosevka.compLig]]
unicode = 57623 # 0xe117
featureTag = 'XV00'
sequence = "<*>"

[[iosevka.compLig]]
unicode = 57624 # 0xe118
featureTag = 'XV00'
sequence = "*>"

[[iosevka.compLig]]
unicode = 57625 # 0xe119
featureTag = 'XV00'
sequence = "<\\"

[[iosevka.compLig]]
unicode = 57626 # 0xe11a
featureTag = 'XV00'
sequence = "<\\>"

[[iosevka.compLig]]
unicode = 57627 # 0xe11b
featureTag = 'XV00'
sequence = "\\>"

[[iosevka.compLig]]
unicode = 57628 # 0xe11c
featureTag = 'XV00'
sequence = "</"

[[iosevka.compLig]]
unicode = 57629 # 0xe11d
featureTag = 'XV00'
sequence = "</>"

[[iosevka.compLig]]
unicode = 57630 # 0xe11e
featureTag = 'XV00'
sequence = "/>"

[[iosevka.compLig]]
unicode = 57631 # 0xe11f
featureTag = 'XV00'
sequence = "<\""

[[iosevka.compLig]]
unicode = 57632 # 0xe120
featureTag = 'XV00'
sequence = "<\">"

[[iosevka.compLig]]
unicode = 57633 # 0xe121
featureTag = 'XV00'
sequence = "\">"

[[iosevka.compLig]]
unicode = 57634 # 0xe122
featureTag = 'XV00'
sequence = "<'"

[[iosevka.compLig]]
unicode = 57635 # 0xe123
featureTag = 'XV00'
sequence = "<'>"

[[iosevka.compLig]]
unicode = 57636 # 0xe124
featureTag = 'XV00'
sequence = "'>"

[[iosevka.compLig]]
unicode = 57637 # 0xe125
featureTag = 'XV00'
sequence = "<^"

[[iosevka.compLig]]
unicode = 57638 # 0xe126
featureTag = 'XV00'
sequence = "<^>"

[[iosevka.compLig]]
unicode = 57639 # 0xe127
featureTag = 'XV00'
sequence = "^>"

[[iosevka.compLig]]
unicode = 57640 # 0xe128
featureTag = 'XV00'
sequence = "<&"

[[iosevka.compLig]]
unicode = 57641 # 0xe129
featureTag = 'XV00'
sequence = "<&>"

[[iosevka.compLig]]
unicode = 57642 # 0xe12a
featureTag = 'XV00'
sequence = "&>"

[[iosevka.compLig]]
unicode = 57643 # 0xe12b
featureTag = 'XV00'
sequence = "<%"

[[iosevka.compLig]]
unicode = 57644 # 0xe12c
featureTag = 'XV00'
sequence = "<%>"

[[iosevka.compLig]]
unicode = 57645 # 0xe12d
featureTag = 'XV00'
sequence = "%>"

[[iosevka.compLig]]
unicode = 57646 # 0xe12e
featureTag = 'XV00'
sequence = "<@"

[[iosevka.compLig]]
unicode = 57647 # 0xe12f
featureTag = 'XV00'
sequence = "<@>"

[[iosevka.compLig]]
unicode = 57648 # 0xe130
featureTag = 'XV00'
sequence = "@>"

[[iosevka.compLig]]
unicode = 57649 # 0xe131
featureTag = 'XV00'
sequence = "<#"

[[iosevka.compLig]]
unicode = 57650 # 0xe132
featureTag = 'XV00'
sequence = "<#>"

[[iosevka.compLig]]
unicode = 57651 # 0xe133
featureTag = 'XV00'
sequence = "#>"

[[iosevka.compLig]]
unicode = 57652 # 0xe134
featureTag = 'XV00'
sequence = "<+"

[[iosevka.compLig]]
unicode = 57653 # 0xe135
featureTag = 'XV00'
sequence = "<+>"

[[iosevka.compLig]]
unicode = 57654 # 0xe136
featureTag = 'XV00'
sequence = "+>"

[[iosevka.compLig]]
unicode = 57655 # 0xe137
featureTag = 'XV00'
sequence = "<-"

[[iosevka.compLig]]
unicode = 57656 # 0xe138
featureTag = 'XV00'
sequence = "<->"

[[iosevka.compLig]]
unicode = 57657 # 0xe139
featureTag = 'XV00'
sequence = "->"

[[iosevka.compLig]]
unicode = 57658 # 0xe13a
featureTag = 'XV00'
sequence = "<!"

[[iosevka.compLig]]
unicode = 57659 # 0xe13b
featureTag = 'XV00'
sequence = "<!>"

[[iosevka.compLig]]
unicode = 57660 # 0xe13c
featureTag = 'XV00'
sequence = "!>"

[[iosevka.compLig]]
unicode = 57661 # 0xe13d
featureTag = 'XV00'
sequence = "<?"

[[iosevka.compLig]]
unicode = 57662 # 0xe13e
featureTag = 'XV00'
sequence = "<?>"

[[iosevka.compLig]]
unicode = 57663 # 0xe13f
featureTag = 'XV00'
sequence = "?>"

[[iosevka.compLig]]
unicode = 57664 # 0xe140
featureTag = 'XV00'
sequence = "<|"

[[iosevka.compLig]]
unicode = 57665 # 0xe141
featureTag = 'XV00'
sequence = "<|>"

[[iosevka.compLig]]
unicode = 57666 # 0xe142
featureTag = 'XV00'
sequence = "|>"

[[iosevka.compLig]]
unicode = 57667 # 0xe143
featureTag = 'XV00'
sequence = "<:"

[[iosevka.compLig]]
unicode = 57668 # 0xe144
featureTag = 'XV00'
sequence = "<:>"

[[iosevka.compLig]]
unicode = 57669 # 0xe145
featureTag = 'XV00'
sequence = ":>"

# -----------------------------------------
# Colons
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57670 # 0xe146
featureTag = 'XV00'
sequence = "::"

[[iosevka.compLig]]
unicode = 57671 # 0xe147
featureTag = 'XV00'
sequence = ":::"

[[iosevka.compLig]]
unicode = 57672 # 0xe148
featureTag = 'XV00'
sequence = "::::"

# -----------------------------------------
# Arrow-like operators
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57673 # 0xe149
featureTag = 'XV00'
sequence = "->"

[[iosevka.compLig]]
unicode = 57674 # 0xe14a
featureTag = 'XV00'
sequence = "->-"

[[iosevka.compLig]]
unicode = 57675 # 0xe14b
featureTag = 'XV00'
sequence = "->--"

[[iosevka.compLig]]
unicode = 57676 # 0xe14c
featureTag = 'XV00'
sequence = "->>"

[[iosevka.compLig]]
unicode = 57677 # 0xe14d
featureTag = 'XV00'
sequence = "->>-"

[[iosevka.compLig]]
unicode = 57678 # 0xe14e
featureTag = 'XV00'
sequence = "->>--"

[[iosevka.compLig]]
unicode = 57679 # 0xe14f
featureTag = 'XV00'
sequence = "->>>"

[[iosevka.compLig]]
unicode = 57680 # 0xe150
featureTag = 'XV00'
sequence = "->>>-"

[[iosevka.compLig]]
unicode = 57681 # 0xe151
featureTag = 'XV00'
sequence = "->>>--"

[[iosevka.compLig]]
unicode = 57682 # 0xe152
featureTag = 'XV00'
sequence = "-->"

[[iosevka.compLig]]
unicode = 57683 # 0xe153
featureTag = 'XV00'
sequence = "-->-"

[[iosevka.compLig]]
unicode = 57684 # 0xe154
featureTag = 'XV00'
sequence = "-->--"

[[iosevka.compLig]]
unicode = 57685 # 0xe155
featureTag = 'XV00'
sequence = "-->>"

[[iosevka.compLig]]
unicode = 57686 # 0xe156
featureTag = 'XV00'
sequence = "-->>-"

[[iosevka.compLig]]
unicode = 57687 # 0xe157
featureTag = 'XV00'
sequence = "-->>--"

[[iosevka.compLig]]
unicode = 57688 # 0xe158
featureTag = 'XV00'
sequence = "-->>>"

[[iosevka.compLig]]
unicode = 57689 # 0xe159
featureTag = 'XV00'
sequence = "-->>>-"

[[iosevka.compLig]]
unicode = 57690 # 0xe15a
featureTag = 'XV00'
sequence = "-->>>--"

[[iosevka.compLig]]
unicode = 57691 # 0xe15b
featureTag = 'XV00'
sequence = ">-"

[[iosevka.compLig]]
unicode = 57692 # 0xe15c
featureTag = 'XV00'
sequence = ">--"

[[iosevka.compLig]]
unicode = 57693 # 0xe15d
featureTag = 'XV00'
sequence = ">>-"

[[iosevka.compLig]]
unicode = 57694 # 0xe15e
featureTag = 'XV00'
sequence = ">>--"

[[iosevka.compLig]]
unicode = 57695 # 0xe15f
featureTag = 'XV00'
sequence = ">>>-"

[[iosevka.compLig]]
unicode = 57696 # 0xe160
featureTag = 'XV00'
sequence = ">>>--"

[[iosevka.compLig]]
unicode = 57697 # 0xe161
featureTag = 'XV00'
sequence = "=>"

[[iosevka.compLig]]
unicode = 57698 # 0xe162
featureTag = 'XV00'
sequence = "=>="

[[iosevka.compLig]]
unicode = 57699 # 0xe163
featureTag = 'XV00'
sequence = "=>=="

[[iosevka.compLig]]
unicode = 57700 # 0xe164
featureTag = 'XV00'
sequence = "=>>"

[[iosevka.compLig]]
unicode = 57701 # 0xe165
featureTag = 'XV00'
sequence = "=>>="

[[iosevka.compLig]]
unicode = 57702 # 0xe166
featureTag = 'XV00'
sequence = "=>>=="

[[iosevka.compLig]]
unicode = 57703 # 0xe167
featureTag = 'XV00'
sequence = "=>>>"

[[iosevka.compLig]]
unicode = 57704 # 0xe168
featureTag = 'XV00'
sequence = "=>>>="

[[iosevka.compLig]]
unicode = 57705 # 0xe169
featureTag = 'XV00'
sequence = "=>>>=="

[[iosevka.compLig]]
unicode = 57706 # 0xe16a
featureTag = 'XV00'
sequence = "==>"

[[iosevka.compLig]]
unicode = 57707 # 0xe16b
featureTag = 'XV00'
sequence = "==>="

[[iosevka.compLig]]
unicode = 57708 # 0xe16c
featureTag = 'XV00'
sequence = "==>=="

[[iosevka.compLig]]
unicode = 57709 # 0xe16d
featureTag = 'XV00'
sequence = "==>>"

[[iosevka.compLig]]
unicode = 57710 # 0xe16e
featureTag = 'XV00'
sequence = "==>>="

[[iosevka.compLig]]
unicode = 57711 # 0xe16f
featureTag = 'XV00'
sequence = "==>>=="

[[iosevka.compLig]]
unicode = 57712 # 0xe170
featureTag = 'XV00'
sequence = "==>>>"

[[iosevka.compLig]]
unicode = 57713 # 0xe171
featureTag = 'XV00'
sequence = "==>>>="

[[iosevka.compLig]]
unicode = 57714 # 0xe172
featureTag = 'XV00'
sequence = "==>>>=="

[[iosevka.compLig]]
unicode = 57715 # 0xe173
featureTag = 'XV00'
sequence = ">="

[[iosevka.compLig]]
unicode = 57716 # 0xe174
featureTag = 'XV00'
sequence = ">=="

[[iosevka.compLig]]
unicode = 57717 # 0xe175
featureTag = 'XV00'
sequence = ">>="

[[iosevka.compLig]]
unicode = 57718 # 0xe176
featureTag = 'XV00'
sequence = ">>=="

[[iosevka.compLig]]
unicode = 57719 # 0xe177
featureTag = 'XV00'
sequence = ">>>="

[[iosevka.compLig]]
unicode = 57720 # 0xe178
featureTag = 'XV00'
sequence = ">>>=="

[[iosevka.compLig]]
unicode = 57721 # 0xe179
featureTag = 'XV00'
sequence = "<-"

[[iosevka.compLig]]
unicode = 57722 # 0xe17a
featureTag = 'XV00'
sequence = "-<-"

[[iosevka.compLig]]
unicode = 57723 # 0xe17b
featureTag = 'XV00'
sequence = "--<-"

[[iosevka.compLig]]
unicode = 57724 # 0xe17c
featureTag = 'XV00'
sequence = "<<-"

[[iosevka.compLig]]
unicode = 57725 # 0xe17d
featureTag = 'XV00'
sequence = "-<<-"

[[iosevka.compLig]]
unicode = 57726 # 0xe17e
featureTag = 'XV00'
sequence = "--<<-"

[[iosevka.compLig]]
unicode = 57727 # 0xe17f
featureTag = 'XV00'
sequence = "<<<-"

[[iosevka.compLig]]
unicode = 57728 # 0xe180
featureTag = 'XV00'
sequence = "-<<<-"

[[iosevka.compLig]]
unicode = 57729 # 0xe181
featureTag = 'XV00'
sequence = "--<<<-"

[[iosevka.compLig]]
unicode = 57730 # 0xe182
featureTag = 'XV00'
sequence = "<--"

[[iosevka.compLig]]
unicode = 57731 # 0xe183
featureTag = 'XV00'
sequence = "-<--"

[[iosevka.compLig]]
unicode = 57732 # 0xe184
featureTag = 'XV00'
sequence = "--<--"

[[iosevka.compLig]]
unicode = 57733 # 0xe185
featureTag = 'XV00'
sequence = "<<--"

[[iosevka.compLig]]
unicode = 57734 # 0xe186
featureTag = 'XV00'
sequence = "-<<--"

[[iosevka.compLig]]
unicode = 57735 # 0xe187
featureTag = 'XV00'
sequence = "--<<--"

[[iosevka.compLig]]
unicode = 57736 # 0xe188
featureTag = 'XV00'
sequence = "<<<--"

[[iosevka.compLig]]
unicode = 57737 # 0xe189
featureTag = 'XV00'
sequence = "-<<<--"

[[iosevka.compLig]]
unicode = 57738 # 0xe18a
featureTag = 'XV00'
sequence = "--<<<--"

[[iosevka.compLig]]
unicode = 57739 # 0xe18b
featureTag = 'XV00'
sequence = "-<"

[[iosevka.compLig]]
unicode = 57740 # 0xe18c
featureTag = 'XV00'
sequence = "--<"

[[iosevka.compLig]]
unicode = 57741 # 0xe18d
featureTag = 'XV00'
sequence = "-<<"

[[iosevka.compLig]]
unicode = 57742 # 0xe18e
featureTag = 'XV00'
sequence = "--<<"

[[iosevka.compLig]]
unicode = 57743 # 0xe18f
featureTag = 'XV00'
sequence = "-<<<"

[[iosevka.compLig]]
unicode = 57744 # 0xe190
featureTag = 'XV00'
sequence = "--<<<"

[[iosevka.compLig]]
unicode = 57745 # 0xe191
featureTag = 'XV00'
sequence = "<="

[[iosevka.compLig]]
unicode = 57746 # 0xe192
featureTag = 'XV00'
sequence = "=<="

[[iosevka.compLig]]
unicode = 57747 # 0xe193
featureTag = 'XV00'
sequence = "==<="

[[iosevka.compLig]]
unicode = 57748 # 0xe194
featureTag = 'XV00'
sequence = "<<="

[[iosevka.compLig]]
unicode = 57749 # 0xe195
featureTag = 'XV00'
sequence = "=<<="

[[iosevka.compLig]]
unicode = 57750 # 0xe196
featureTag = 'XV00'
sequence = "==<<="

[[iosevka.compLig]]
unicode = 57751 # 0xe197
featureTag = 'XV00'
sequence = "<<<="

[[iosevka.compLig]]
unicode = 57752 # 0xe198
featureTag = 'XV00'
sequence = "=<<<="

[[iosevka.compLig]]
unicode = 57753 # 0xe199
featureTag = 'XV00'
sequence = "==<<<="

[[iosevka.compLig]]
unicode = 57754 # 0xe19a
featureTag = 'XV00'
sequence = "<=="

[[iosevka.compLig]]
unicode = 57755 # 0xe19b
featureTag = 'XV00'
sequence = "=<=="

[[iosevka.compLig]]
unicode = 57756 # 0xe19c
featureTag = 'XV00'
sequence = "==<=="

[[iosevka.compLig]]
unicode = 57757 # 0xe19d
featureTag = 'XV00'
sequence = "<<=="

[[iosevka.compLig]]
unicode = 57758 # 0xe19e
featureTag = 'XV00'
sequence = "=<<=="

[[iosevka.compLig]]
unicode = 57759 # 0xe19f
featureTag = 'XV00'
sequence = "==<<=="

[[iosevka.compLig]]
unicode = 57760 # 0xe1a0
featureTag = 'XV00'
sequence = "<<<=="

[[iosevka.compLig]]
unicode = 57761 # 0xe1a1
featureTag = 'XV00'
sequence = "=<<<=="

[[iosevka.compLig]]
unicode = 57762 # 0xe1a2
featureTag = 'XV00'
sequence = "==<<<=="

[[iosevka.compLig]]
unicode = 57763 # 0xe1a3
featureTag = 'XV00'
sequence = "=<"

[[iosevka.compLig]]
unicode = 57764 # 0xe1a4
featureTag = 'XV00'
sequence = "==<"

[[iosevka.compLig]]
unicode = 57765 # 0xe1a5
featureTag = 'XV00'
sequence = "=<<"

[[iosevka.compLig]]
unicode = 57766 # 0xe1a6
featureTag = 'XV00'
sequence = "==<<"

[[iosevka.compLig]]
unicode = 57767 # 0xe1a7
featureTag = 'XV00'
sequence = "=<<<"

[[iosevka.compLig]]
unicode = 57768 # 0xe1a8
featureTag = 'XV00'
sequence = "==<<<"

# -----------------------------------------
# Monadic operators
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57769 # 0xe1a9
featureTag = 'XV00'
sequence = ">=>"

[[iosevka.compLig]]
unicode = 57770 # 0xe1aa
featureTag = 'XV00'
sequence = ">->"

[[iosevka.compLig]]
unicode = 57771 # 0xe1ab
featureTag = 'XV00'
sequence = ">-->"

[[iosevka.compLig]]
unicode = 57772 # 0xe1ac
featureTag = 'XV00'
sequence = ">==>"

[[iosevka.compLig]]
unicode = 57773 # 0xe1ad
featureTag = 'XV00'
sequence = "<=<"

[[iosevka.compLig]]
unicode = 57774 # 0xe1ae
featureTag = 'XV00'
sequence = "<-<"

[[iosevka.compLig]]
unicode = 57775 # 0xe1af
featureTag = 'XV00'
sequence = "<--<"

[[iosevka.compLig]]
unicode = 57776 # 0xe1b0
featureTag = 'XV00'
sequence = "<==<"

# -----------------------------------------
# Composition operators
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57777 # 0xe1b1
featureTag = 'XV00'
sequence = ">>"

[[iosevka.compLig]]
unicode = 57778 # 0xe1b2
featureTag = 'XV00'
sequence = ">>>"

[[iosevka.compLig]]
unicode = 57779 # 0xe1b3
featureTag = 'XV00'
sequence = "<<"

[[iosevka.compLig]]
unicode = 57780 # 0xe1b4
featureTag = 'XV00'
sequence = "<<<"

# -----------------------------------------
# Lens operators
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57781 # 0xe1b5
featureTag = 'XV00'
sequence = ":+"

[[iosevka.compLig]]
unicode = 57782 # 0xe1b6
featureTag = 'XV00'
sequence = ":-"

[[iosevka.compLig]]
unicode = 57783 # 0xe1b7
featureTag = 'XV00'
sequence = ":="

[[iosevka.compLig]]
unicode = 57784 # 0xe1b8
featureTag = 'XV00'
sequence = "+:"

[[iosevka.compLig]]
unicode = 57785 # 0xe1b9
featureTag = 'XV00'
sequence = "-:"

[[iosevka.compLig]]
unicode = 57786 # 0xe1ba
featureTag = 'XV00'
sequence = "=:"

[[iosevka.compLig]]
unicode = 57787 # 0xe1bb
featureTag = 'XV00'
sequence = "=^"

[[iosevka.compLig]]
unicode = 57788 # 0xe1bc
featureTag = 'XV00'
sequence = "=+"

[[iosevka.compLig]]
unicode = 57789 # 0xe1bd
featureTag = 'XV00'
sequence = "=-"

[[iosevka.compLig]]
unicode = 57790 # 0xe1be
featureTag = 'XV00'
sequence = "=*"

[[iosevka.compLig]]
unicode = 57791 # 0xe1bf
featureTag = 'XV00'
sequence = "=/"

[[iosevka.compLig]]
unicode = 57792 # 0xe1c0
featureTag = 'XV00'
sequence = "=%"

[[iosevka.compLig]]
unicode = 57793 # 0xe1c1
featureTag = 'XV00'
sequence = "^="

[[iosevka.compLig]]
unicode = 57794 # 0xe1c2
featureTag = 'XV00'
sequence = "+="

[[iosevka.compLig]]
unicode = 57795 # 0xe1c3
featureTag = 'XV00'
sequence = "-="

[[iosevka.compLig]]
unicode = 57796 # 0xe1c4
featureTag = 'XV00'
sequence = "*="

[[iosevka.compLig]]
unicode = 57797 # 0xe1c5
featureTag = 'XV00'
sequence = "/="

[[iosevka.compLig]]
unicode = 57798 # 0xe1c6
featureTag = 'XV00'
sequence = "%="

# -----------------------------------------
# Logical
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57799 # 0xe1c7
featureTag = 'XV00'
sequence = "/\\"

[[iosevka.compLig]]
unicode = 57800 # 0xe1c8
featureTag = 'XV00'
sequence = "\\/"

# -----------------------------------------
# Semigroup/monoid operators
# -----------------------------------------

[[iosevka.compLig]]
unicode = 57801 # 0xe1c9
featureTag = 'XV00'
sequence = "<>"

[[iosevka.compLig]]
unicode = 57802 # 0xe1ca
featureTag = 'XV00'
sequence = "<+"

[[iosevka.compLig]]
unicode = 57803 # 0xe1cb
featureTag = 'XV00'
sequence = "<+>"

[[iosevka.compLig]]
unicode = 57804 # 0xe1cc
featureTag = 'XV00'
sequence = "+>"

[[iosevka.compLig]]
unicode = 57805 # 0xe1cc
featureTag = 'XV00'
sequence = ">~>"

[[iosevka.compLig]]
unicode = 57806 # 0xe1cc
featureTag = 'XV00'
sequence = "<~>"
```

</details>

### [Build the iosevka font](http://adam.kruszewski.name/#org05845d4)

Finally we can build the font. Just for the build step run we’ll add otfcc’s binary path to the `$PATH` variable, for npm to find it. Go grab some coffee as it might take a while.

```bash
env PATH="$PATH:../otfcc/bin/release-x64/" npm run build -- contents::iosevka-custom
```

> I had to install `node lts/fermium` using `nvm` to get the font to build

> ALSO: I had to reduce the number of concurrent processes on gitpod. I added this to the command: `--jCmd=<number of processes>`
>
> ```bash
> env PATH="$PATH:../otfcc/bin/release-x64/" npm run build -- contents::iosevka-custom --jCmd=8
> ```

### [Install the font](http://adam.kruszewski.name/#org3c8f24c)

The last step is to install the font, a shortcut from using your desktop’s font manager is just to copy the fonts where font-config can find them and invalidate its cache.

```bash
cp build/iosevka-custom/*.ttf ~/.fonts
fc-cache -f
```

That’s all, custom Iosevka build should be available as “Iosevka Custom” now. Happy hacking!

About me:

I'm software architect and engineer with 20+ years of experience. Love coding and problem solving. CTO and co-founder of [RevDeBug](https://revdebug.com/).