[ef@eriks-pc river]$ zig build --Drelease-safe --prefix ~/.local install >> output.txt
Unrecognized argument: --Drelease-safe

Usage: /usr/bin/zig build [steps] [options]

Steps:
  install (default)           Copy build artifacts to prefix path
  uninstall                   Remove build artifacts from prefix path
  test                        Run the tests

General Options:
  -h, --help                  Print this help and exit
  --verbose                   Print commands before executing them
  -p, --prefix [path]         Override default install prefix
  --search-prefix [path]      Add a path to look for binaries, libraries, headers
  --color [auto|off|on]       Enable or disable colored error messages

Project-Specific Options:
  -Dtarget=[string]           The CPU architecture, OS, and ABI to build for
  -Dcpu=[string]              Target CPU
  -Drelease-safe=[bool]       Optimizations on and safety on
  -Drelease-fast=[bool]       Optimizations on and safety off
  -Drelease-small=[bool]      Size optimizations on and safety off
  -Dxwayland=[bool]           Set to true to enable xwayland support
  -Dman-pages=[bool]          Set to true to build man pages. Requires scdoc. Defaults to true if scdoc is found.
  -Dbash-completion=[bool]    Set to true to install bash completion for riverctl. Defaults to true.
  -Dzsh-completion=[bool]     Set to true to install zsh completion for riverctl. Defaults to true.
  -Dfish-completion=[bool]    Set to true to install fish completion for riverctl. Defaults to true.
  -Dexamples=[bool]           Set to true to build examples

Advanced Options:
  --build-file [file]         Override path to build.zig
  --cache-dir [path]          Override path to zig cache directory
  --override-lib-dir [arg]    Override path to Zig lib directory
  --verbose-tokenize          Enable compiler debug output for tokenization
  --verbose-ast               Enable compiler debug output for parsing into an AST
  --verbose-link              Enable compiler debug output for linking
  --verbose-ir                Enable compiler debug output for Zig IR
  --verbose-llvm-ir           Enable compiler debug output for LLVM IR
  --verbose-cimport           Enable compiler debug output for C imports
  --verbose-cc                Enable compiler debug output for C compilation
  --verbose-llvm-cpu-features Enable compiler debug output for LLVM CPU features
error: the following build command failed with exit code 1:
/home/ef/dots/river/zig-cache/o/a26258fc6b3436a435068f2d601613aa/build /usr/bin/zig /home/ef/dots/river /home/ef/dots/river/zig-cache /home/ef/.cache/zig --Drelease-safe --prefix /home/ef/.local install