pyrox.dev
1# Accumulate infixes for taking in the right input parameters with the `mangle*`
2# functions below. See setup-hook for details.
3accumulateRoles() {
4 declare -ga role_infixes=()
5 if [ "${NIX_@wrapperName@_@infixSalt@_TARGET_BUILD:-}" ]; then
6 role_infixes+=(_BUILD_)
7 fi
8 if [ "${NIX_@wrapperName@_@infixSalt@_TARGET_HOST:-}" ]; then
9 role_infixes+=(_)
10 fi
11 if [ "${NIX_@wrapperName@_@infixSalt@_TARGET_TARGET:-}" ]; then
12 role_infixes+=(_TARGET_)
13 fi
14}
15
16mangleVarList() {
17 local var="$1"
18 shift
19 local -a role_infixes=("$@")
20
21 local outputVar="${var/+/_@infixSalt@_}"
22 declare -gx ${outputVar}+=''
23 # For each role we serve, we accumulate the input parameters into our own
24 # cc-wrapper-derivation-specific environment variables.
25 for infix in "${role_infixes[@]}"; do
26 local inputVar="${var/+/${infix}}"
27 if [ -v "$inputVar" ]; then
28 export ${outputVar}+="${!outputVar:+ }${!inputVar}"
29 fi
30 done
31}
32
33mangleVarBool() {
34 local var="$1"
35 shift
36 local -a role_infixes=("$@")
37
38 local outputVar="${var/+/_@infixSalt@_}"
39 declare -gxi ${outputVar}+=0
40 for infix in "${role_infixes[@]}"; do
41 local inputVar="${var/+/${infix}}"
42 if [ -v "$inputVar" ]; then
43 # "1" in the end makes `let` return success error code when
44 # expression itself evaluates to zero.
45 # We don't use `|| true` because that would silence actual
46 # syntax errors from bad variable values.
47 let "${outputVar} |= ${!inputVar:-0}" "1"
48 fi
49 done
50}
51
52skip () {
53 if (( "${NIX_DEBUG:-0}" >= 1 )); then
54 echo "skipping impure path $1" >&2
55 fi
56}
57
58
59# Checks whether a path is impure. E.g., `/lib/foo.so' is impure, but
60# `/nix/store/.../lib/foo.so' isn't.
61badPath() {
62 local p=$1
63
64 # Relative paths are okay (since they're presumably relative to
65 # the temporary build directory).
66 if [ "${p:0:1}" != / ]; then return 1; fi
67
68 # Otherwise, the path should refer to the store or some temporary
69 # directory (including the build directory).
70 test \
71 "$p" != "/dev/null" -a \
72 "${p:0:${#NIX_STORE}}" != "$NIX_STORE" -a \
73 "${p:0:4}" != "/tmp" -a \
74 "${p:0:${#NIX_BUILD_TOP}}" != "$NIX_BUILD_TOP"
75}
76
77expandResponseParams() {
78 declare -ga params=("$@")
79 local arg
80 for arg in "$@"; do
81 if [[ "$arg" == @* ]]; then
82 # phase separation makes this look useless
83 # shellcheck disable=SC2157
84 if [ -x "@expandResponseParams@" ]; then
85 # params is used by caller
86 #shellcheck disable=SC2034
87 readarray -d '' params < <("@expandResponseParams@" "$@")
88 return 0
89 else
90 echo "Response files aren't supported during bootstrapping" >&2
91 return 1
92 fi
93 fi
94 done
95}