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Stop writing CLI validation. Parse it right the first time

(hackers.pub)
203 points dahlia | 5 comments | 06 Sep 25 18:20 UTC | HN request time: 0.015s | source
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bschwindHN ◴[07 Sep 25 09:25 UTC] No.45156696[source]▶
Rust with Clap solved this forever ago.

Also - don't write CLI programs in languages that don't compile to native binaries. I don't want to have to drag around your runtime just to execute a command line tool.

replies(9): >>45156782 #>>45156785 #>>45157057 #>>45157203 #>>45158148 #>>45159646 #>>45160365 #>>45161166 #>>45163035 #
MathMonkeyMan ◴[07 Sep 25 10:47 UTC] No.45157057[source]▶
Almost every command line tool has runtime dependencies that must be installed on your system.

    $ ldd /usr/bin/rg
    linux-vdso.so.1 (0x00007fff45dd7000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x000070764e7b1000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x000070764e6ca000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x000070764de00000)
    /lib64/ld-linux-x86-64.so.2 (0x000070764e7e6000)
The worst is compiling a C program with a compiler that uses a more recent libc than is installed on the installation host.
replies(7): >>45157725 #>>45157872 #>>45157947 #>>45157966 #>>45158276 #>>45161297 #>>45161300 #
1. craftkiller ◴[07 Sep 25 14:08 UTC] No.45158276[source]▶
Don't let your dreams be dreams

  $ wget 'https://github.com/BurntSushi/ripgrep/releases/download/14.1.1/ripgrep-14.1.1-x86_64-unknown-linux-musl.tar.gz'
  $ tar -xvf 'ripgrep-14.1.1-x86_64-unknown-linux-musl.tar.gz'
  $ ldd ripgrep-14.1.1-x86_64-unknown-linux-musl/rg
  ldd (0x7f1dcb927000)
  $ file ripgrep-14.1.1-x86_64-unknown-linux-musl/rg
  ripgrep-14.1.1-x86_64-unknown-linux-musl/rg: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), static-pie linked, stripped
replies(1): >>45161037 #
2. 3836293648 ◴[07 Sep 25 18:48 UTC] No.45161037[source]▶
Which only works on linux. No other OS allows static binaries, you always need to link to libc for syscalls.
replies(2): >>45161505 #>>45162302 #
3. craftkiller ◴[07 Sep 25 19:44 UTC] No.45161505[source]▶
Also works on FreeBSD. FreeBSD maintains ABI compatibility within each major version (so 14.0 is compatible with 14.1, 14.2, and 14.3 but not 15.0): You also can install compatibility packages that make binaries compiled for older major versions run on newer major versions.

  $ pkg install git rust
  $ git clone https://github.com/BurntSushi/ripgrep.git
  $ cd ripgrep
  $ RUSTFLAGS='-C target-feature=+crt-static' cargo build --release
  
  $ ldd target/release/rg
  ldd: target/release/rg: not a dynamic ELF executable
  $ file target/release/rg
  target/release/rg: ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD), statically linked, for FreeBSD 14.3, FreeBSD-style, with debug_info, not stripped
4. exe34 ◴[07 Sep 25 21:25 UTC] No.45162302[source]▶
try cosmopolitan!
replies(1): >>45164575 #
5. 3836293648 ◴[08 Sep 25 04:14 UTC] No.45164575{3}[source]▶
Cosmopolitan isn't statically linked, it's just a hack that works on all systems, dynamically linking on windows and macos (I think with a statically linked custom dynamic linker?)