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lib/strings/toShellVars: handle derivations as strings

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Naïm Favier 2022-05-07 13:37:03 +02:00
parent 7dbfd6b997
commit 4d2ea62d82
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GPG key ID: 49B07322580B7EE2
2 changed files with 17 additions and 4 deletions
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9
lib/strings.nix
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@ -339,9 +339,10 @@ rec {
/* Translate a Nix value into a shell variable declaration, with proper escaping. /* Translate a Nix value into a shell variable declaration, with proper escaping.
Supported value types are strings (mapped to regular variables), lists of strings The value can be a string (mapped to a regular variable), a list of strings
(mapped to Bash-style arrays) and attribute sets of strings (mapped to Bash-style (mapped to a Bash-style array) or an attribute set of strings (mapped to a
associative arrays). Note that "strings" include string-coercible values like paths. Bash-style associative array). Note that "string" includes string-coercible
values like paths or derivations.
Strings are translated into POSIX sh-compatible code; lists and attribute sets Strings are translated into POSIX sh-compatible code; lists and attribute sets
assume a shell that understands Bash syntax (e.g. Bash or ZSH). assume a shell that understands Bash syntax (e.g. Bash or ZSH).
@ -356,7 +357,7 @@ rec {
*/ */
toShellVar = name: value: toShellVar = name: value:
lib.throwIfNot (isValidPosixName name) "toShellVar: ${name} is not a valid shell variable name" ( lib.throwIfNot (isValidPosixName name) "toShellVar: ${name} is not a valid shell variable name" (
if isAttrs value then if isAttrs value && ! isCoercibleToString value then
"declare -A ${name}=(${ "declare -A ${name}=(${
concatStringsSep " " (lib.mapAttrsToList (n: v: concatStringsSep " " (lib.mapAttrsToList (n: v:
"[${escapeShellArg n}]=${escapeShellArg v}" "[${escapeShellArg n}]=${escapeShellArg v}"

12
lib/tests/misc.nix
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@ -269,6 +269,15 @@ runTests {
strings strings
possibly newlines possibly newlines
''; '';
drv = {
outPath = "/drv";
foo = "ignored attribute";
};
path = /path;
stringable = {
__toString = _: "hello toString";
bar = "ignored attribute";
};
}} }}
''; '';
expected = '' expected = ''
@ -277,6 +286,9 @@ runTests {
declare -A assoc=(['with some']='strings declare -A assoc=(['with some']='strings
possibly newlines possibly newlines
') ')
drv='/drv'
path='/path'
stringable='hello toString'
''; '';
}; };