diff --git a/lib/attrsets.nix b/lib/attrsets.nix
index c686e1d20eb8..d2946f6ca9cb 100644
--- a/lib/attrsets.nix
+++ b/lib/attrsets.nix
@@ -116,7 +116,7 @@ rec {
     listToAttrs (concatMap (name: let v = set.${name}; in if pred name v then [(nameValuePair name v)] else []) (attrNames set));
 
 
-  /* Filter an attribute set recursivelly by removing all attributes for
+  /* Filter an attribute set recursively by removing all attributes for
      which the given predicate return false.
 
      Example:
@@ -334,7 +334,7 @@ rec {
       value = f name (catAttrs name sets);
     }) names);
 
-  /* Implentation note: Common names  appear multiple times in the list of
+  /* Implementation note: Common names  appear multiple times in the list of
      names, hopefully this does not affect the system because the maximal
      laziness avoid computing twice the same expression and listToAttrs does
      not care about duplicated attribute names.
@@ -353,7 +353,7 @@ rec {
   zipAttrs = zipAttrsWith (name: values: values);
 
   /* Does the same as the update operator '//' except that attributes are
-     merged until the given pedicate is verified.  The predicate should
+     merged until the given predicate is verified.  The predicate should
      accept 3 arguments which are the path to reach the attribute, a part of
      the first attribute set and a part of the second attribute set.  When
      the predicate is verified, the value of the first attribute set is
diff --git a/lib/composable-derivation.nix b/lib/composable-derivation.nix
index 5442dcedeabc..5e55ac023f14 100644
--- a/lib/composable-derivation.nix
+++ b/lib/composable-derivation.nix
@@ -39,7 +39,7 @@ let inherit (lib) nv nvs; in
   #
   # issues:
   # * its complicated to understand
-  # * some "features" such as exact merge behaviour are burried in mergeAttrBy
+  # * some "features" such as exact merge behaviour are buried in mergeAttrBy
   #   and defaultOverridableDelayableArgs assuming the default behaviour does
   #   the right thing in the common case
   # * Eelco once said using such fix style functions are slow to evaluate
@@ -48,7 +48,7 @@ let inherit (lib) nv nvs; in
   #   / add patches the way you want without having to declare function arguments
   #
   # nice features:
-  # declaring "optional featuers" is modular. For instance:
+  # declaring "optional features" is modular. For instance:
   #   flags.curl = {
   #     configureFlags = ["--with-curl=${curl.dev}" "--with-curlwrappers"];
   #     buildInputs = [curl openssl];
diff --git a/lib/customisation.nix b/lib/customisation.nix
index a6c24f083a5b..4853290db542 100644
--- a/lib/customisation.nix
+++ b/lib/customisation.nix
@@ -10,7 +10,7 @@ rec {
 
   /* `overrideDerivation drv f' takes a derivation (i.e., the result
      of a call to the builtin function `derivation') and returns a new
-     derivation in which the attributes of the original are overriden
+     derivation in which the attributes of the original are overridden
      according to the function `f'.  The function `f' is called with
      the original derivation attributes.
 
diff --git a/lib/deprecated.nix b/lib/deprecated.nix
index 45a3893fc22d..983e8d26892b 100644
--- a/lib/deprecated.nix
+++ b/lib/deprecated.nix
@@ -253,11 +253,11 @@ rec {
   # eg { a = 7; } {  a = [ 2 3 ]; } becomes { a = [ 7 2 3 ]; }
   mergeAttrsConcatenateValues = mergeAttrsWithFunc ( a: b: (toList a) ++ (toList b) );
 
-  # merges attributes using //, if a name exisits in both attributes
+  # merges attributes using //, if a name exists in both attributes
   # an error will be triggered unless its listed in mergeLists
   # so you can mergeAttrsNoOverride { buildInputs = [a]; } { buildInputs = [a]; } {} to get
   # { buildInputs = [a b]; }
-  # merging buildPhase does'nt really make sense. The cases will be rare where appending /prefixing will fit your needs?
+  # merging buildPhase doesn't really make sense. The cases will be rare where appending /prefixing will fit your needs?
   # in these cases the first buildPhase will override the second one
   # ! deprecated, use mergeAttrByFunc instead
   mergeAttrsNoOverride = { mergeLists ? ["buildInputs" "propagatedBuildInputs"],
diff --git a/lib/fetchers.nix b/lib/fetchers.nix
index 19d89d6c4074..21f28c32ef7e 100644
--- a/lib/fetchers.nix
+++ b/lib/fetchers.nix
@@ -1,4 +1,4 @@
-# snippets that can be shared by mutliple fetchers (pkgs/build-support)
+# snippets that can be shared by multiple fetchers (pkgs/build-support)
 {
 
   proxyImpureEnvVars = [
diff --git a/lib/lists.nix b/lib/lists.nix
index 82d5ba0124cb..fd746f4f97b1 100644
--- a/lib/lists.nix
+++ b/lib/lists.nix
@@ -191,7 +191,7 @@ rec {
   */
   optional = cond: elem: if cond then [elem] else [];
 
-  /* Return a list or an empty list, dependening on a boolean value.
+  /* Return a list or an empty list, depending on a boolean value.
 
      Example:
        optionals true [ 2 3 ]
diff --git a/lib/modules.nix b/lib/modules.nix
index 862488310d81..91e2eae0595e 100644
--- a/lib/modules.nix
+++ b/lib/modules.nix
@@ -423,7 +423,7 @@ rec {
     in concatMap (def: if getPrio def == highestPrio then [(strip def)] else []) defs;
 
   /* Sort a list of properties.  The sort priority of a property is
-     1000 by default, but can be overriden by wrapping the property
+     1000 by default, but can be overridden by wrapping the property
      using mkOrder. */
   sortProperties = defs:
     let
diff --git a/lib/strings.nix b/lib/strings.nix
index ffa93c8e454a..d48624257cf0 100644
--- a/lib/strings.nix
+++ b/lib/strings.nix
@@ -126,8 +126,8 @@ rec {
   */
   makePerlPath = makeSearchPathOutput "lib" "lib/perl5/site_perl";
 
-  /* Dependening on the boolean `cond', return either the given string
-     or the empty string. Useful to contatenate against a bigger string.
+  /* Depending on the boolean `cond', return either the given string
+     or the empty string. Useful to concatenate against a bigger string.
 
      Example:
        optionalString true "some-string"
diff --git a/lib/tests.nix b/lib/tests.nix
index d93cadf25335..995a743fe43f 100644
--- a/lib/tests.nix
+++ b/lib/tests.nix
@@ -231,7 +231,7 @@ runTests {
     };
     in {
       expr = generators.toJSON {} val;
-      # trival implementation
+      # trivial implementation
       expected = builtins.toJSON val;
   };
 
@@ -243,7 +243,7 @@ runTests {
     };
     in {
       expr = generators.toYAML {} val;
-      # trival implementation
+      # trivial implementation
       expected = builtins.toJSON val;
   };
 
diff --git a/lib/types.nix b/lib/types.nix
index c834cc8e6534..45122759bfca 100644
--- a/lib/types.nix
+++ b/lib/types.nix
@@ -52,7 +52,7 @@ rec {
     { # Human-readable representation of the type, should be equivalent to
       # the type function name.
       name
-    , # Description of the type, defined recursively by embedding the the wrapped type if any.
+    , # Description of the type, defined recursively by embedding the wrapped type if any.
       description ? null
     , # Function applied to each definition that should return true if
       # its type-correct, false otherwise.