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> 💡 **Note** > > greatly inspired by _Direnv_ this new "_nuenv_" hook will `source` any `.env.nu` file found in the current directory as part of a hook. in order to be a bit more safe, i've added `nuenv allow` and `nuenv disallow` that will keep track of which "env" files are allowed to be sourced, i.e. if a file is not allowed, then you'll have to run `nuenv allow` first. ## example usage ```nushell use nu-hooks/nuenv/hook.nu [ "nuenv allow", "nuenv disallow" ] $env.config.hooks.env_change.PWD = (use nu-hooks/nuenv/hook.nu; hook setup) ```
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const NUENV_FILE = ($nu.cache-dir | path join 'nuenv' 'allowed.txt') | ||
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def get-allowed []: [ nothing -> list<string> ] { | ||
if ($NUENV_FILE | path exists) { | ||
open $NUENV_FILE | lines | ||
} else { | ||
[] | ||
} | ||
} | ||
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# setup a hook that will try to load `.env.nu` if it is allowed | ||
# | ||
# # Example | ||
# ```nushell | ||
# use nu-hooks/nuenv/hook.nu [ "nuenv allow", "nuenv disallow" ] | ||
# $env.config.hooks.env_change.PWD = (use nu-hooks/nuenv/hook.nu; hook setup) | ||
# ``` | ||
export def setup []: [ nothing -> record<condition: closure, code: string> ] { | ||
{ | ||
condition: {|_, after| $after | path join '.env.nu' | path exists } | ||
code: $" | ||
let allowed = if \('($NUENV_FILE)' | path exists\) { | ||
open ($NUENV_FILE) | lines | ||
} else { | ||
[] | ||
} | ||
if \(open .env.nu | hash sha256\) not-in $allowed { | ||
error make --unspanned { | ||
msg: $'\(ansi purple\)\('.env.nu' | path expand\)\(ansi reset\) is not allowed', | ||
help: $'please run \(ansi default_dimmed\)nuenv allow\(ansi reset\) first', | ||
} | ||
} | ||
print $'[\(ansi yellow_bold\)nu-hooks nuenv\(ansi reset\)] loading env file \(ansi purple\).env.nu\(ansi reset\)' | ||
source .env.nu | ||
" | ||
} | ||
} | ||
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def _log [msg: string, color: string] { | ||
print $'[(ansi $color)nuenv(ansi reset)] (ansi purple)(".env.nu" | path expand)(ansi reset) ($msg)' | ||
} | ||
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def warning [msg: string] { | ||
_log $msg "yellow_bold" | ||
} | ||
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def info [msg: string] { | ||
_log $msg "green_bold" | ||
} | ||
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def check-env-file [] { | ||
if not (".env.nu" | path exists) { | ||
error make --unspanned { | ||
msg: $"(ansi red_bold)env file not found(ansi reset)", | ||
help: $"no (ansi yellow).env.nu(ansi reset) in (ansi purple)(pwd)(ansi reset)", | ||
} | ||
} | ||
} | ||
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# adds `./.env.nu` to the list of allowed "env" files | ||
export def "nuenv allow" [] { | ||
check-env-file | ||
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let allowed = get-allowed | ||
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let hash = open .env.nu | hash sha256 | ||
if $hash in $allowed { | ||
warning "is already allowed" | ||
return | ||
} | ||
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mkdir ($nu.cache-dir | path join "nuenv") | ||
$hash | $in + "\n" out>> $NUENV_FILE | ||
info "has been allowed" | ||
} | ||
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# removes `./.env.nu` from the list of allowed "env" files | ||
export def "nuenv disallow" [] { | ||
check-env-file | ||
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let allowed = get-allowed | ||
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let hash = open .env.nu | hash sha256 | ||
if $hash not-in $allowed { | ||
warning "is already disallowed" | ||
return | ||
} | ||
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$allowed | find --invert $hash | to text | save --force $NUENV_FILE | ||
info "has been disallowed" | ||
} |