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| author | Robert Hensing <robert@roberthensing.nl> | 2022-12-28 23:10:44 +0100 |
|---|---|---|
| committer | Robert Hensing <robert@roberthensing.nl> | 2022-12-31 01:03:23 +0100 |
| commit | 67cfc7a8f68776cbd7cf73e3c79b4cdd3ea102c4 (patch) | |
| tree | d2b1b3238954cff1f32990f304dc9487328fffd3 /lib/strings.nix | |
| parent | Merge pull request #208126 from NixOS/haskell-updates (diff) | |
| download | nixpkgs-67cfc7a8f68776cbd7cf73e3c79b4cdd3ea102c4.tar.gz | |
lib.strings: Add isSimpleCoercibleToString
Diffstat (limited to 'lib/strings.nix')
| -rw-r--r-- | lib/strings.nix | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/strings.nix b/lib/strings.nix index 20f6db08cebc..039a9ed1db1c 100644 --- a/lib/strings.nix +++ b/lib/strings.nix @@ -805,6 +805,17 @@ rec { x ? outPath || x ? __toString; + /* Check whether a value can be coerced to a string, + The value must be a string, path, or attribute set. + + This follows Nix's internal coerceToString(coerceMore = false) logic, + except for external types, for which we return false. + */ + isSimpleCoercibleToString = x: + elem (typeOf x) [ "path" "string" ] || + x ? outPath || + x ? __toString; + /* Check whether a value is a store path. Example: |