Installer

https://tryskl.fyi/install.sh is a POSIX sh script. It downloads the release binary for this machine, verifies it, installs it without sudo, and in a terminal runs skl setup.

curl -fsSL https://tryskl.fyi/install.sh | sh
curl -fsSL https://tryskl.fyi/install.sh | sh -s -- --non-interactive

Flags

• --non-interactive, -n. Install the binary only. Skip skl setup.
• --print-target. Print the release triple for this machine and exit.
• --help, -h. Print the installer help and exit.

Any other argument fails with unknown argument.

Environment variables

Variable	Effect	Default
SKL_DOWNLOAD_BASE	Origin for the binary and SHA256SUMS	https://github.com/x0ba/skl/releases/latest/download
SKL_INSTALL_DIR	Install directory	~/.local/bin
SKL_NON_INTERACTIVE	When set, same as --non-interactive	unset
API_BASE	API origin passed to skl setup	https://api.tryskl.fyi
CI	When set, install the binary only	unset

Platforms

uname -s	uname -m	Release triple	Installed name
Linux	x86_64, amd64	x86_64-unknown-linux-musl	skl
Linux	aarch64, arm64	aarch64-unknown-linux-musl	skl
Darwin	x86_64	x86_64-apple-darwin	skl
Darwin	arm64, aarch64	aarch64-apple-darwin	skl
MINGW*, MSYS*, CYGWIN*	x86_64, amd64, i686, i386	x86_64-pc-windows-gnu	skl.exe

Any other combination fails with unsupported OS or unsupported ... architecture.

What it does

1. Downloads skl-<triple> from SKL_DOWNLOAD_BASE with curl. curl is required.
2. Downloads SHA256SUMS and compares the file with sha256sum or shasum -a 256. A mismatch fails with checksum mismatch. A missing SHA256SUMS or missing entry prints a warning and continues.
3. Moves the file to SKL_INSTALL_DIR and marks it executable.
4. When SKL_INSTALL_DIR is not on PATH, prints the export PATH=... line to add. It never edits .bashrc, .zshrc, or fish configuration.
5. When stdout is a terminal, /dev/tty is readable, and neither CI nor non-interactive mode is set, runs skl setup attached to /dev/tty. Otherwise prints non-interactive / non-TTY: binary only.

Output

==> downloading https://github.com/x0ba/skl/releases/latest/download/skl-x86_64-unknown-linux-musl
==> checksum ok (skl-x86_64-unknown-linux-musl)
==> installed /home/you/.local/bin/skl
==> first-run: invoking /home/you/.local/bin/skl setup (login / init / harness checklist)
==> done. try: skl --help